updated Gemfile and lock
the pry gems got lost
submod tick
fixed Gemfile.lock
submod tick
speeded up article overview
vote count data as csv file
Merge remote-tracking branch 'decko/master'

Conflicts:
	Gemfile.lock
Gemfile.lock with pry
Merge pull request #83 from xithan/master

csv file for vote count data and faster article overview
removed pry-byebug
because server uses ruby 1.9.3
Merge remote-tracking branch 'decko/master'
mobile view and the home page polish
Merge remote-tracking branch 'henry/source_preview_optimization'
merged in cambridge changes
merge in home page upgrades + vote reporting