Get the comment ID correctly regardless of the syntax of the ID.
Merge remote-tracking branch 'astorm/master'

Brought over astorm's StackExchange plugin code.

Conflicts:
	webapp/plugins/twitter/tests/TestOfTwitterPluginConfigurationController.php
Compat fixes for StackExchange plugin

Fixed several small glitches regarding making the StackExchange
plugin work with the newer ThinkUP 2.0-8.
Merge remote-tracking branch 'nunonunes/codefix-facebook_comment_id_parse'

Merging over the fix for lacking reply/like counts on Facebook posts
merging