Remove unused styles

// FREEBIE

stylesheets/_global.scss

@@ -50,10 +50,6 @@ body {
   }
 }
 
-.window-controls {
-  float: right;
-}
-
 .title-text {
   height: $header-height;
   line-height: $header-height;
@@ -398,25 +394,6 @@ $avatar-size: 44px;
   content: 'Add: ';
 }
 
-
-// avatar colors
-.avatar.colorgray { background-color: #999999 }
-.avatar.color1  { background-color: #EF5350 } // red
-.avatar.color2  { background-color: #EC407A } // pink
-.avatar.color3  { background-color: #AB47BC } // purple
-.avatar.color4  { background-color: #7E57C2 } // deep purple
-.avatar.color5  { background-color: #5C6BC0 } // indigo
-.avatar.color6  { background-color: #2196F3 } // blue
-.avatar.color7  { background-color: #03A9F4 } // light blue
-.avatar.color8  { background-color: #00BCD4 } // cyan
-.avatar.color9  { background-color: #009688 } // teal
-.avatar.color10  { background-color: #4CAF50 } // green
-.avatar.color11 { background-color: #7CB342 } // light green
-.avatar.color12 { background-color: #FF9800 } // orange
-.avatar.color13 { background-color: #FF5722 } // deep orange
-.avatar.color14 { background-color: #FFB300 } // amber
-.avatar.color15 { background-color: #607D8B } // blue grey
-
 .loading {
   position: relative;
   &::after {

stylesheets/_index.scss

@@ -12,10 +12,6 @@
   overflow: auto;
 }
 
-.loading .gutter {
-  // TODO: spinner
-}
-
 .gutter {
   float: left;
   margin: 10px 0;
@@ -178,17 +174,6 @@ input.search {
 
 }
 
-.settings {
-  height: 100%;
-  width: 100%;
-  background: red;
-  display: none;
-
-  .settings-open & {
-    display: block;
-  }
-}
-
 .conversations .unread .contact-details {
     .name,
     .last-message,

stylesheets/manifest.css

@@ -54,9 +54,6 @@ body {
     #header button:hover {
       background-color: rgba(0, 0, 0, 0.2); }
 
-.window-controls {
-  float: right; }
-
 .title-text {
   height: 36px;
   line-height: 36px;
@@ -316,54 +313,6 @@ img.emoji {
 .new-group-update .recipients-input .recipients::before {
   content: 'Add: '; }
 
-.avatar.colorgray {
-  background-color: #999999; }
-
-.avatar.color1 {
-  background-color: #EF5350; }
-
-.avatar.color2 {
-  background-color: #EC407A; }
-
-.avatar.color3 {
-  background-color: #AB47BC; }
-
-.avatar.color4 {
-  background-color: #7E57C2; }
-
-.avatar.color5 {
-  background-color: #5C6BC0; }
-
-.avatar.color6 {
-  background-color: #2196F3; }
-
-.avatar.color7 {
-  background-color: #03A9F4; }
-
-.avatar.color8 {
-  background-color: #00BCD4; }
-
-.avatar.color9 {
-  background-color: #009688; }
-
-.avatar.color10 {
-  background-color: #4CAF50; }
-
-.avatar.color11 {
-  background-color: #7CB342; }
-
-.avatar.color12 {
-  background-color: #FF9800; }
-
-.avatar.color13 {
-  background-color: #FF5722; }
-
-.avatar.color14 {
-  background-color: #FFB300; }
-
-.avatar.color15 {
-  background-color: #607D8B; }
-
 .loading {
   position: relative; }
   .loading::after {
@@ -554,14 +503,6 @@ input.search {
     right: 12px;
     color: #888; }
 
-.settings {
-  height: 100%;
-  width: 100%;
-  background: red;
-  display: none; }
-  .settings-open .settings {
-    display: block; }
-
 .conversations .unread .contact-details .name,
 .conversations .unread .contact-details .last-message,
 .conversations .unread .contact-details .last-timestamp {