**Now uses the FastAdapter
general
- update to latest android build tools
- cleanup
- add jcenter as repo
library
- update android-iconics
- add new FastAdapter dependency to AboutLibraries
- remove old LibsRecyclerViewAdapter
- switch to better and new FastItemAdapter from the FastAdapter library
library-definition
- added new license CC0
- added unsplash
sample
- rename and move sample to app to fit all my other open source projects
- update sample to latest MaterialDrawer which also switches to the FastAdapter