Added post report feature

You can report a single post by clicking the correct icon in the controler section

Workflow:
* Report a post as offensive
* Trigger alerts to every pod-admin
* Pod-admin can review it in the admin interface
* Delete the post or mark it as reviewed
Merge branch 'release/0.3.0.0'
Switched to using rails-timeago to make keeping on top of new versions of plugin easier
Merge pull request #4281 from Ruxton/feature/use_rails_timeago_gem_instead_of_vendored_js

Switched to using rails-timeago to make keeping on top of new versions o...
Merge pull request #4517 from Zauberstuhl/report_post_feature

Added post reporter feature

Conflicts:
	Changelog.md
	app/assets/stylesheets/application.css.sass
	db/schema.rb
Moves rails-timeago into the root of Gemfile, it's used in views + assets
Merge pull request #4712 from Ruxton/feature/move_timeago_outside_of_assets_group

Moves rails-timeago into the root of Gemfile, it's used in views + assets
fix regression in conversations causing an infinite recursion (fix #4715)
fix regression in conversations causing an infinite recursion (fix #4715)

(cherry picked from commit 5c059b2925db882fadbd6b908e6706eb7fd5f379)

Conflicts:
	Changelog.md
bump to 0.3.0.1
Merge branch 'hotfix/0.3.0.1' into develop

Conflicts:
	Changelog.md
	config/defaults.yml
Merge remote-tracking branch 'upstream/develop' into pod.jpope.org tag: 0.3.0.1