Removing permission check on posting comments

Unnecessary now that we have moderation.
Bugfix

Closes GH-189
Merge commit 'refs/merge-requests/5' of gitorious.org:snowdrift/snowdrift
updated text in comic
fixed spacing
added new comic about grants
Merge gitorious.org:snowdrift/snowdrift
Merge commit 'refs/merge-requests/6' of gitorious.org:snowdrift/snowdrift
Removing actions from comment previews

Closes GH-77
Merge gitorious.org:snowdrift/snowdrift
previous typo wasn't fixed in Joe's version when he updated, so fix needed refixing
better h1 h2 etc spacing