feat: update Font Awesome to 4.7

site-root/sass/fonts/font-awesome.scss

@@ -1,8 +1,12 @@
 /*!
- *  Font Awesome 4.0.3 by @davegandy - http://fontawesome.io - @fontawesome
+ *  Font Awesome 4.7.0 by @davegandy - http://fontawesome.io - @fontawesome
  *  License - http://fontawesome.io/license (Font: SIL OFL 1.1, CSS: MIT License)
  */
 
+// modified variables and import paths
+
+$fa-font-path: '../../../fonts';
+
 @import "font-awesome/variables";
 @import "font-awesome/mixins";
 @import "font-awesome/path";
@@ -11,7 +15,8 @@
 @import "font-awesome/fixed-width";
 @import "font-awesome/list";
 @import "font-awesome/bordered-pulled";
-@import "font-awesome/spinning";
+@import "font-awesome/animated";
 @import "font-awesome/rotated-flipped";
 @import "font-awesome/stacked";
 @import "font-awesome/icons";
+@import "font-awesome/screen-reader";

site-root/sass/fonts/font-awesome/_animated.scss

@@ -0,0 +1,34 @@
+// Spinning Icons
+// --------------------------
+
+.#{$fa-css-prefix}-spin {
+  -webkit-animation: fa-spin 2s infinite linear;
+          animation: fa-spin 2s infinite linear;
+}
+
+.#{$fa-css-prefix}-pulse {
+  -webkit-animation: fa-spin 1s infinite steps(8);
+          animation: fa-spin 1s infinite steps(8);
+}
+
+@-webkit-keyframes fa-spin {
+  0% {
+    -webkit-transform: rotate(0deg);
+            transform: rotate(0deg);
+  }
+  100% {
+    -webkit-transform: rotate(359deg);
+            transform: rotate(359deg);
+  }
+}
+
+@keyframes fa-spin {
+  0% {
+    -webkit-transform: rotate(0deg);
+            transform: rotate(0deg);
+  }
+  100% {
+    -webkit-transform: rotate(359deg);
+            transform: rotate(359deg);
+  }
+}

site-root/sass/fonts/font-awesome/_bordered-pulled.scss

@@ -7,6 +7,15 @@
   border-radius: .1em;
 }
 
+.#{$fa-css-prefix}-pull-left { float: left; }
+.#{$fa-css-prefix}-pull-right { float: right; }
+
+.#{$fa-css-prefix} {
+  &.#{$fa-css-prefix}-pull-left { margin-right: .3em; }
+  &.#{$fa-css-prefix}-pull-right { margin-left: .3em; }
+}
+
+/* Deprecated as of 4.4.0 */
 .pull-right { float: right; }
 .pull-left { float: left; }
 

site-root/sass/fonts/font-awesome/_core.scss

@@ -3,10 +3,10 @@
 
 .#{$fa-css-prefix} {
   display: inline-block;
-  font-family: FontAwesome;
-  font-style: normal;
-  font-weight: normal;
-  line-height: 1;
+  font: normal normal normal #{$fa-font-size-base}/#{$fa-line-height-base} FontAwesome; // shortening font declaration
+  font-size: inherit; // can't have font-size inherit on line above, so need to override
+  text-rendering: auto; // optimizelegibility throws things off #1094
   -webkit-font-smoothing: antialiased;
   -moz-osx-font-smoothing: grayscale;
+
 }

site-root/sass/fonts/font-awesome/_mixins.scss

@@ -1,20 +1,60 @@
 // Mixins
 // --------------------------
 
+@mixin fa-icon() {
+  display: inline-block;
+  font: normal normal normal #{$fa-font-size-base}/#{$fa-line-height-base} FontAwesome; // shortening font declaration
+  font-size: inherit; // can't have font-size inherit on line above, so need to override
+  text-rendering: auto; // optimizelegibility throws things off #1094
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+
+}
+
 @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);
-     -moz-transform: rotate($degrees);
       -ms-transform: rotate($degrees);
-       -o-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, $vert);
-     -moz-transform: scale($horiz, $vert);
       -ms-transform: scale($horiz, $vert);
-       -o-transform: scale($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;
+  }
+}

site-root/sass/fonts/font-awesome/_path.scss

@@ -1,5 +1,15 @@
 /* FONT PATH
  * -------------------------- */
-@import "compass/css3";
 
-@include font-face("FontAwesome", inline-font-files("fontawesome-webfont.woff", woff));
+@font-face {
+  font-family: 'FontAwesome';
+  src: url('#{$fa-font-path}/fontawesome-webfont.eot?v=#{$fa-version}');
+  src: url('#{$fa-font-path}/fontawesome-webfont.eot?#iefix&v=#{$fa-version}') format('embedded-opentype'),
+    url('#{$fa-font-path}/fontawesome-webfont.woff2?v=#{$fa-version}') format('woff2'),
+    url('#{$fa-font-path}/fontawesome-webfont.woff?v=#{$fa-version}') format('woff'),
+    url('#{$fa-font-path}/fontawesome-webfont.ttf?v=#{$fa-version}') format('truetype'),
+    url('#{$fa-font-path}/fontawesome-webfont.svg?v=#{$fa-version}#fontawesomeregular') format('svg');
+//  src: url('#{$fa-font-path}/FontAwesome.otf') format('opentype'); // used when developing fonts
+  font-weight: normal;
+  font-style: normal;
+}

site-root/sass/fonts/font-awesome/_rotated-flipped.scss

@@ -7,3 +7,14 @@
 
 .#{$fa-css-prefix}-flip-horizontal { @include fa-icon-flip(-1, 1, 0); }
 .#{$fa-css-prefix}-flip-vertical   { @include fa-icon-flip(1, -1, 2); }
+
+// Hook for IE8-9
+// -------------------------
+
+:root .#{$fa-css-prefix}-rotate-90,
+:root .#{$fa-css-prefix}-rotate-180,
+:root .#{$fa-css-prefix}-rotate-270,
+:root .#{$fa-css-prefix}-flip-horizontal,
+:root .#{$fa-css-prefix}-flip-vertical {
+  filter: none;
+}

site-root/sass/fonts/font-awesome/_screen-reader.scss

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