fixing the active tab button formatting

(they had lost their ellipsis on overflow)
updating font awesome from 3.0.2 to 3.2.1

(this gives us a spinner to use with layer loading messaging)
adding Layer Load Progress messaging

so far this only works for tiled layers…next steps include clustered
point layer (marine debris)
updating Layer Load Progress (now Layer Loading Message)

so it now works for both tiled layers and for Filterable Vector layers.
note:  scaled back the messaging to only display when a layer is
activated (or updated in the case of filterable layers), no longer
messaging when map is panned or zoomed
manual merge
fixing issue in which 2 buttons were added to Active when filterable layer was activated