Merge remote-tracking branch 'PotatoDumplings/subscription' into subscriptions

Conflicts:
	r2/r2/public/static/main.js
Merge branch 'master' into subscriptions
Tidy up layout of subscribe link
Merge remote-tracking branch 'PotatoDumplings/master' into subscriptions

Conflicts:
	r2/r2/public/static/main.css
Fixed icon for subscription.
Merge remote-tracking branch 'PotatoDumplings/subscription' into subscriptions

Conflicts:
	r2/r2/public/static/main.css
	r2/r2/templates/comment.html
	r2/r2/templates/link.html
Adjust shade of grey in subscribe icon to match other icons
Tag based sidebar semi working.
Side bar recent specifics working.
Removed debugging code from link.py.
Made recenttaged code more elegant.
Removed Tags, Top Contributors.
Made only top level comments visible, changed titles.
Small fixes.
Reverted unfinished changes.
Tag based sidebar semi working.
Side bar recent specifics working.
Removed debugging code from link.py.
Made only top level comments visible, changed titles.
Small fixes.