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Fixes: #76
Sort the front page by popularity by default
The right bar does filtering instead of just scrolling
Improve visual design of the front page right bar
Improve the front page sorting menu
Merge branch 'release-1.0'

Conflicts:
	hyperkitty/static/hyperkitty/css/hyperkitty-common.css
	hyperkitty/static/hyperkitty/css/hyperkitty-index.css
	hyperkitty/static/hyperkitty/js/hyperkitty-index.js
	hyperkitty/templates/index.html
	hyperkitty/templates/messages/reply_form.html