Theming touches

Got excited and did a whole bunch theming tweaks :smile: Discussion around these changes very encouraged, some are fast and loose and intended to spur ideas. Here are some pictures, current homepage:

![screencapture-homepage-master](https://cloud.githubusercontent.com/assets/104885/3296954/16671012-f5e9-11e3-9c4f-946266459699.png)

Homepage with tweaks:

![screencapture-homepage](https://cloud.githubusercontent.com/assets/104885/3296960/27616354-f5e9-11e3-99ab-3215732ff151.png)

Good stuff:
- Active links in header
- Fixed WeAreYVR glyph
- Make dev more friendly by not requiring environment var
- Page titles
- Bootstrap pagination for Kaminari

Need more discussion or should be broken into separate issues:
- Hero image on homepage
- Intro content on homepage
- Rename Activity Stream to Recent Activity
- About and Contact page implementation, just using an empty controller
- About and Contact page content
- Tidy up footer, who should be attributed?

To discuss or should have separate issues:
- Move `col-sm-8 col-sm-offset-2` grid further into individual files, should result in cleaner main layout and more flexibility.
- Fix header search alignment, text should be in line with nav items, something weird with the form?
- Organizations page has a different footer, didn't look into why

![screen-shot-2014-06-16-at-11 30 34-pm](https://cloud.githubusercontent.com/assets/104885/3296990/b14ada00-f5e9-11e3-8650-d1657eafff3e.png)

Cool!