Re-committing hotfix #5
Hotfix #19: Timestamp for category refresh now set properly in parserDidEndDocument method.
Merge branch 'Hotfix/5' into develop
Hotfix #20: Pops back to root when attempting to load a category with no network connection and no cache
Hotfix #20: Moved pop logic
Hotfix #20: Moving icon alpha fix to Hotfix #22
Hotfix #22: Both text and icons now dim to alpha .45 when read
Hotfix #21: Read items now dim immediately instead of after reloading the tableVIew