[NOT STABLE] create constants package and extracted business intelligence from authenticationController. There is a nullPointer on editText recovered from activity in controller, need to figure out how to handle this.
fixed nullPointer from last commit. Still need to implement some functions in authentication service.
[IN PROGRESS] started handling server response. Currently studying possibility to use android authenticator as account manager.
accountManager not very adapted to what we need. Instead implemented simple sharedPreferences. Login now works, just need to handle bad credentials.
Authentication service now checks if user is already logged (existence of stored sharedPreferences). If yes, dismiss authentication and display core activity. Also started to modify readme.
started to handle failed authentication. Still need to see what's wrong with second web service call.
removed unnecessary verification to allow multiple requests to server
moved strings inside of strings.xml to avoid conflict with merge (sometimes easier than solving conflict \!)
Meh. Conflict not avoided after all.
Merge branch 'authentication-service'

Conflicts:
	src/main/res/values/strings.xml
removed unhandled 'forgotten password' option menu
Added deconnect button in options menu of coreActivity.
Merge branch 'master' into searchscreen