Merging in dev changes for v0.8

- Proper icon and title appears for importer menu item under Components (language file fixes)
- A real README!
- Allowed for Joomla 1.7 (Platform 11.2)
- Added meta keyword and description population (if provided in feed)
- Fixed whiplash on Advanced settings expansion
- Added noindex, follow metatag for category pages for duplicate content reduction
- Added parent category option to automatically store imported categories in a central location (e.g., Blog)