Added a bit of example text over the slider

A bit nicer showing/hiding of the slider cell
Added an error view on the tables
Posting comments actually works

Styled the compose screen a bit better
Got rid of warning
Default avatar
Added TTTAttributedLabel for comment cells

Added TSMessages for generic user messages
Tweaked the margins on block quotes
Get post from right attribute
Generate an attributed string out of the comment html
Getting comments to display somewhat correctly