Optimized Imports
Preparing Settings & Quick Fixes

- Copied + Pasted the SettingsFragment from another project I worked on
- Fixed ArrayIndexOutOfBounds exception when loading individual articles
- Article fragment layout is now empty by default (no dummy data)
- Added clearCache() and clearData() APIs to PkRSS
Working Settings

I had no idea what settings to add to this so I just made the basics.