Update Font Awesome to version 4.6.1

assets/_scss/vendor/font-awesome/_font-awesome.scss

@@ -1,5 +1,5 @@
 /*!
- *  Font Awesome 4.5.0 by @davegandy - http://fontawesome.io - @fontawesome
+ *  Font Awesome 4.6.1 by @davegandy - http://fontawesome.io - @fontawesome
  *  License - http://fontawesome.io/license (Font: SIL OFL 1.1, CSS: MIT License)
  */
 
@@ -15,3 +15,4 @@
 @import "rotated-flipped";
 @import "stacked";
 @import "icons";
+@import "screen-reader";

assets/_scss/vendor/font-awesome/_icons.scss

@@ -695,3 +695,30 @@
 .#{$fa-css-prefix}-bluetooth:before { content: $fa-var-bluetooth; }
 .#{$fa-css-prefix}-bluetooth-b:before { content: $fa-var-bluetooth-b; }
 .#{$fa-css-prefix}-percent:before { content: $fa-var-percent; }
+.#{$fa-css-prefix}-gitlab:before { content: $fa-var-gitlab; }
+.#{$fa-css-prefix}-wpbeginner:before { content: $fa-var-wpbeginner; }
+.#{$fa-css-prefix}-wpforms:before { content: $fa-var-wpforms; }
+.#{$fa-css-prefix}-envira:before { content: $fa-var-envira; }
+.#{$fa-css-prefix}-universal-access:before { content: $fa-var-universal-access; }
+.#{$fa-css-prefix}-wheelchair-alt:before { content: $fa-var-wheelchair-alt; }
+.#{$fa-css-prefix}-question-circle-o:before { content: $fa-var-question-circle-o; }
+.#{$fa-css-prefix}-blind:before { content: $fa-var-blind; }
+.#{$fa-css-prefix}-audio-description:before { content: $fa-var-audio-description; }
+.#{$fa-css-prefix}-volume-control-phone:before { content: $fa-var-volume-control-phone; }
+.#{$fa-css-prefix}-braille:before { content: $fa-var-braille; }
+.#{$fa-css-prefix}-assistive-listening-systems:before { content: $fa-var-assistive-listening-systems; }
+.#{$fa-css-prefix}-asl-interpreting:before,
+.#{$fa-css-prefix}-american-sign-language-interpreting:before { content: $fa-var-american-sign-language-interpreting; }
+.#{$fa-css-prefix}-deafness:before,
+.#{$fa-css-prefix}-hard-of-hearing:before,
+.#{$fa-css-prefix}-deaf:before { content: $fa-var-deaf; }
+.#{$fa-css-prefix}-glide:before { content: $fa-var-glide; }
+.#{$fa-css-prefix}-glide-g:before { content: $fa-var-glide-g; }
+.#{$fa-css-prefix}-signing:before,
+.#{$fa-css-prefix}-sign-language:before { content: $fa-var-sign-language; }
+.#{$fa-css-prefix}-low-vision:before { content: $fa-var-low-vision; }
+.#{$fa-css-prefix}-viadeo:before { content: $fa-var-viadeo; }
+.#{$fa-css-prefix}-viadeo-square:before { content: $fa-var-viadeo-square; }
+.#{$fa-css-prefix}-snapchat:before { content: $fa-var-snapchat; }
+.#{$fa-css-prefix}-snapchat-ghost:before { content: $fa-var-snapchat-ghost; }
+.#{$fa-css-prefix}-snapchat-square:before { content: $fa-var-snapchat-square; }

assets/_scss/vendor/font-awesome/_mixins.scss

@@ -12,15 +12,49 @@
 }
 
 @mixin fa-icon-rotate($degrees, $rotation) {
-  filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=#{$rotation});
+  -ms-filter: "progid:DXImageTransform.Microsoft.BasicImage(rotation=#{$rotation})";
   -webkit-transform: rotate($degrees);
       -ms-transform: rotate($degrees);
           transform: rotate($degrees);
 }
 
 @mixin fa-icon-flip($horiz, $vert, $rotation) {
-  filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=#{$rotation});
+  -ms-filter: "progid:DXImageTransform.Microsoft.BasicImage(rotation=#{$rotation}, mirror=1)";
   -webkit-transform: scale($horiz, $vert);
       -ms-transform: scale($horiz, $vert);
           transform: scale($horiz, $vert);
 }
+
+
+// Only display content to screen readers. A la Bootstrap 4.
+//
+// See: http://a11yproject.com/posts/how-to-hide-content/
+
+@mixin sr-only {
+  position: absolute;
+  width: 1px;
+  height: 1px;
+  padding: 0;
+  margin: -1px;
+  overflow: hidden;
+  clip: rect(0,0,0,0);
+  border: 0;
+}
+
+// Use in conjunction with .sr-only to only display content when it's focused.
+//
+// Useful for "Skip to main content" links; see http://www.w3.org/TR/2013/NOTE-WCAG20-TECHS-20130905/G1
+//
+// Credit: HTML5 Boilerplate
+
+@mixin sr-only-focusable {
+  &:active,
+  &:focus {
+    position: static;
+    width: auto;
+    height: auto;
+    margin: 0;
+    overflow: visible;
+    clip: auto;
+  }
+}

assets/_scss/vendor/font-awesome/_screen-reader.scss

@@ -0,0 +1,5 @@
+// Screen Readers
+// -------------------------
+
+.sr-only { @include sr-only(); }
+.sr-only-focusable { @include sr-only-focusable(); }

assets/_scss/vendor/font-awesome/_variables.scss

@@ -4,9 +4,9 @@
 $fa-font-path:        "../fonts" !default;
 $fa-font-size-base:   14px !default;
 $fa-line-height-base: 1 !default;
-//$fa-font-path:        "//netdna.bootstrapcdn.com/font-awesome/4.5.0/fonts" !default; // for referencing Bootstrap CDN font files directly
+//$fa-font-path:        "//netdna.bootstrapcdn.com/font-awesome/4.6.1/fonts" !default; // for referencing Bootstrap CDN font files directly
 $fa-css-prefix:       fa !default;
-$fa-version:          "4.5.0" !default;
+$fa-version:          "4.6.1" !default;
 $fa-border-color:     #eee !default;
 $fa-inverse:          #fff !default;
 $fa-li-width:         (30em / 14) !default;
@@ -20,6 +20,7 @@ $fa-var-align-left: "\f036";
 $fa-var-align-right: "\f038";
 $fa-var-amazon: "\f270";
 $fa-var-ambulance: "\f0f9";
+$fa-var-american-sign-language-interpreting: "\f2a3";
 $fa-var-anchor: "\f13d";
 $fa-var-android: "\f17b";
 $fa-var-angellist: "\f209";
@@ -50,8 +51,11 @@ $fa-var-arrows: "\f047";
 $fa-var-arrows-alt: "\f0b2";
 $fa-var-arrows-h: "\f07e";
 $fa-var-arrows-v: "\f07d";
+$fa-var-asl-interpreting: "\f2a3";
+$fa-var-assistive-listening-systems: "\f2a2";
 $fa-var-asterisk: "\f069";
 $fa-var-at: "\f1fa";
+$fa-var-audio-description: "\f29e";
 $fa-var-automobile: "\f1b9";
 $fa-var-backward: "\f04a";
 $fa-var-balance-scale: "\f24e";
@@ -86,6 +90,7 @@ $fa-var-bitbucket: "\f171";
 $fa-var-bitbucket-square: "\f172";
 $fa-var-bitcoin: "\f15a";
 $fa-var-black-tie: "\f27e";
+$fa-var-blind: "\f29d";
 $fa-var-bluetooth: "\f293";
 $fa-var-bluetooth-b: "\f294";
 $fa-var-bold: "\f032";
@@ -94,6 +99,7 @@ $fa-var-bomb: "\f1e2";
 $fa-var-book: "\f02d";
 $fa-var-bookmark: "\f02e";
 $fa-var-bookmark-o: "\f097";
+$fa-var-braille: "\f2a1";
 $fa-var-briefcase: "\f0b1";
 $fa-var-btc: "\f15a";
 $fa-var-bug: "\f188";
@@ -196,6 +202,8 @@ $fa-var-cutlery: "\f0f5";
 $fa-var-dashboard: "\f0e4";
 $fa-var-dashcube: "\f210";
 $fa-var-database: "\f1c0";
+$fa-var-deaf: "\f2a4";
+$fa-var-deafness: "\f2a4";
 $fa-var-dedent: "\f03b";
 $fa-var-delicious: "\f1a5";
 $fa-var-desktop: "\f108";
@@ -217,6 +225,7 @@ $fa-var-empire: "\f1d1";
 $fa-var-envelope: "\f0e0";
 $fa-var-envelope-o: "\f003";
 $fa-var-envelope-square: "\f199";
+$fa-var-envira: "\f299";
 $fa-var-eraser: "\f12d";
 $fa-var-eur: "\f153";
 $fa-var-euro: "\f153";
@@ -300,8 +309,11 @@ $fa-var-git-square: "\f1d2";
 $fa-var-github: "\f09b";
 $fa-var-github-alt: "\f113";
 $fa-var-github-square: "\f092";
+$fa-var-gitlab: "\f296";
 $fa-var-gittip: "\f184";
 $fa-var-glass: "\f000";
+$fa-var-glide: "\f2a5";
+$fa-var-glide-g: "\f2a6";
 $fa-var-globe: "\f0ac";
 $fa-var-google: "\f1a0";
 $fa-var-google-plus: "\f0d5";
@@ -325,6 +337,7 @@ $fa-var-hand-rock-o: "\f255";
 $fa-var-hand-scissors-o: "\f257";
 $fa-var-hand-spock-o: "\f259";
 $fa-var-hand-stop-o: "\f256";
+$fa-var-hard-of-hearing: "\f2a4";
 $fa-var-hashtag: "\f292";
 $fa-var-hdd-o: "\f0a0";
 $fa-var-header: "\f1dc";
@@ -397,6 +410,7 @@ $fa-var-long-arrow-down: "\f175";
 $fa-var-long-arrow-left: "\f177";
 $fa-var-long-arrow-right: "\f178";
 $fa-var-long-arrow-up: "\f176";
+$fa-var-low-vision: "\f2a8";
 $fa-var-magic: "\f0d0";
 $fa-var-magnet: "\f076";
 $fa-var-mail-forward: "\f064";
@@ -490,6 +504,7 @@ $fa-var-qq: "\f1d6";
 $fa-var-qrcode: "\f029";
 $fa-var-question: "\f128";
 $fa-var-question-circle: "\f059";
+$fa-var-question-circle-o: "\f29c";
 $fa-var-quote-left: "\f10d";
 $fa-var-quote-right: "\f10e";
 $fa-var-ra: "\f1d0";
@@ -544,8 +559,10 @@ $fa-var-shopping-bag: "\f290";
 $fa-var-shopping-basket: "\f291";
 $fa-var-shopping-cart: "\f07a";
 $fa-var-sign-in: "\f090";
+$fa-var-sign-language: "\f2a7";
 $fa-var-sign-out: "\f08b";
 $fa-var-signal: "\f012";
+$fa-var-signing: "\f2a7";
 $fa-var-simplybuilt: "\f215";
 $fa-var-sitemap: "\f0e8";
 $fa-var-skyatlas: "\f216";
@@ -554,6 +571,9 @@ $fa-var-slack: "\f198";
 $fa-var-sliders: "\f1de";
 $fa-var-slideshare: "\f1e7";
 $fa-var-smile-o: "\f118";
+$fa-var-snapchat: "\f2ab";
+$fa-var-snapchat-ghost: "\f2ac";
+$fa-var-snapchat-square: "\f2ad";
 $fa-var-soccer-ball-o: "\f1e3";
 $fa-var-sort: "\f0dc";
 $fa-var-sort-alpha-asc: "\f15d";
@@ -655,6 +675,7 @@ $fa-var-twitter-square: "\f081";
 $fa-var-umbrella: "\f0e9";
 $fa-var-underline: "\f0cd";
 $fa-var-undo: "\f0e2";
+$fa-var-universal-access: "\f29a";
 $fa-var-university: "\f19c";
 $fa-var-unlink: "\f127";
 $fa-var-unlock: "\f09c";
@@ -673,11 +694,14 @@ $fa-var-venus: "\f221";
 $fa-var-venus-double: "\f226";
 $fa-var-venus-mars: "\f228";
 $fa-var-viacoin: "\f237";
+$fa-var-viadeo: "\f2a9";
+$fa-var-viadeo-square: "\f2aa";
 $fa-var-video-camera: "\f03d";
 $fa-var-vimeo: "\f27d";
 $fa-var-vimeo-square: "\f194";
 $fa-var-vine: "\f1ca";
 $fa-var-vk: "\f189";
+$fa-var-volume-control-phone: "\f2a0";
 $fa-var-volume-down: "\f027";
 $fa-var-volume-off: "\f026";
 $fa-var-volume-up: "\f028";
@@ -687,11 +711,14 @@ $fa-var-weibo: "\f18a";
 $fa-var-weixin: "\f1d7";
 $fa-var-whatsapp: "\f232";
 $fa-var-wheelchair: "\f193";
+$fa-var-wheelchair-alt: "\f29b";
 $fa-var-wifi: "\f1eb";
 $fa-var-wikipedia-w: "\f266";
 $fa-var-windows: "\f17a";
 $fa-var-won: "\f159";
 $fa-var-wordpress: "\f19a";
+$fa-var-wpbeginner: "\f297";
+$fa-var-wpforms: "\f298";
 $fa-var-wrench: "\f0ad";
 $fa-var-xing: "\f168";
 $fa-var-xing-square: "\f169";