More style, more features.

API:
- Refactored db error checking to app.checkError()
- Not entirely done - need to refactor several controllers
- Completed more Conversations services
- pulses.delete fixed
- sidebar-pulses.delete and update fixed
- standardized on :pulseId for the ID of a pulse in all URLs

FE:
- Main/Sidebar division is 8/4 for all sizes less than large
- Main/Sidebar division is 9/3 for all sizes large and up
- More style tweaks and new classes/LESS files created
- Inception work on Conversations (not usable yet)
- About & Main tweaks (this will never stop, I am not in sales,
marketing or UX design, so expect lots of "try this? try that? try this?
try that?")
Merge branch 'master' of github.com:robcolbert/pulsarcms
Cleanup

API:
- FIX: socket.io was issuing a *warn* per connection due to use of
http://api.robcolbert.com as the allowed origin. Changed to
http://robcolbert.com:80 after realizing omitting the port number (even
if 80) still triggered the warn.
Merge remote-tracking branch 'upstream/master'