Overall UX/UI overhaul modifications w/responsive design.

Added FontAwesome 4.1.0 and BS3.
Added topic excerpt with read more/less expansion.
Changed font-family to Helvetica Neue stack (sans-serif) and post
content to Georgia stack (serif).
Modified mini search drop down.
Modified button classes.
Modified input, textarea classes.
Improvements on landing page when first initialized.
Added new logo to the initialization/start page.
Add collapse navigation.
Fix IE11 layouts and forms.
Fixes content overflow that breaks responsive layout
Added padding around post body and removed borders
Merge pull request #143 from cnvo/master

Overall UX/UI overhaul modifications w/responsive design.