* added 3rd post step
	    * implemented ScrollList and DialogFragments for route and Facebook groups selection: leaving address, dropping address, user groups
		* updated DB schema to contain all groups, user-belonging groups, user-selected route-paired groups
		* wrote PHP scripts on the server-side for selection / update cases
	* implemented Toast to inform about no present Internet connection before committing network-sensitive small actions
	* finished up posts step handling back and fourth in activity
	* created an abstract AsyncTaskLoader for data download in background thread
	* updated Post model class, to contain all needed post information