Upgraded bootstrap to 3.3.4

src/UI/Content/Bootstrap/progress-bars.less

@@ -19,7 +19,6 @@
 }
 
 
-
 // Bar itself
 // -------------------------
 
@@ -29,7 +28,7 @@
   height: @line-height-computed;
   margin-bottom: @line-height-computed;
   background-color: @progress-bg;
-  border-radius: @border-radius-base;
+  border-radius: @progress-border-radius;
   .box-shadow(inset 0 1px 2px rgba(0,0,0,.1));
 }
 
@@ -48,18 +47,26 @@
 }
 
 // Striped bars
-.progress-striped .progress-bar {
+//
+// `.progress-striped .progress-bar` is deprecated as of v3.2.0 in favor of the
+// `.progress-bar-striped` class, which you just add to an existing
+// `.progress-bar`.
+.progress-striped .progress-bar,
+.progress-bar-striped {
   #gradient > .striped();
   background-size: 40px 40px;
 }
 
 // Call animation for the active one
-.progress.active .progress-bar {
+//
+// `.progress.active .progress-bar` is deprecated as of v3.2.0 in favor of the
+// `.progress-bar.active` approach.
+.progress.active .progress-bar,
+.progress-bar.active {
   .animation(progress-bar-stripes 2s linear infinite);
 }
 
 
-
 // Variations
 // -------------------------