Register nibs on table view for loading by nib.
Fix typo in xibs' file names and their identifiers.
Fix cell loading conditions to always return a cell.
Fix height of outer view containing text views.
Add opf_stringByStrippingHTML as NSString-category.
Add OPFStripAscii on OPF_escapeWithScheme's category.
Fix acitivity comment view cell's UITextView's height.
Revert to loading logged in user's feed, not hardcoded IDs.