Improve JavaScript scraper
Silent nokorigi/libxml2 warnings
Improve DOM scraper
Update Laravel documentation (4.2.11)
Update Chai documentation (1.10.0)
Update Sinon.js documentation (1.12.1)
Update Python documentation (3.4.2)

Fixes #137.
Add Python 2 documentation
Improve C and C++ scrapers

Fixes #138.
Don't auto-hide update notification
Make Google use the meta description
Add share notification
Update icons
Tweak CSS variables
Remove useless background color
Update gem dependencies
Update Less documentation (2.1.0)
Update Ruby on Rails documentation (4.1.8)
Update Ruby 2.1.5
Update gem dependencies