Friendlist UI, Performance & bug fixes

Fixes and updates:
- add viewholder
- fixes the sync sort problem
- add highlight color
- merge friendlist table into profile for enabling multi friend lists.

Dropped:
- friend since support
- online indicator that was broken in all the translations except the default one
![screenshot_2014-08-24-16-47-36](https://cloud.githubusercontent.com/assets/5322473/4023647/38d012bc-2b9e-11e4-9589-9180ba7bbe0a.png)