Introduce src/ and dist/ folders

Separate minifying/renaming of files to prod-only tasks

Add tasks for copying jQuery and fonts

Ref #1138, #1070, #1155

assets/less/components/_media.less

@@ -1,13 +0,0 @@
-// Captions
-.wp-caption {
-  &:extend(.thumbnail all);
-}
-
-.wp-caption-text {
-    &:extend(.thumbnail .caption);
-}
-
-// Gallery shortcode
-.gallery-row {
-  padding: (@line-height-computed / 2) 0;
-}

assets/less/components/_wp-classes.less

@@ -1,28 +0,0 @@
-// WordPress Generated Classes
-// http://codex.wordpress.org/CSS#WordPress_Generated_Classes
-
-.aligncenter {
-  display: block;
-  margin: (@line-height-computed / 2) auto;
-}
-.alignleft,
-.alignright {
-  margin-bottom: (@line-height-computed / 2);
-}
-figure.alignnone {
-  margin-left: 0;
-  margin-right: 0;
-  max-width: 100%;
-}
-
-@media (min-width: @screen-sm-min) {
-  // Only float images if not on an extra small device like smartphones
-  .alignleft {
-    float: left;
-    margin-right: (@line-height-computed / 2);
-  }
-  .alignright {
-    float: right;
-    margin-left: (@line-height-computed / 2);
-  }
-}