implemented add arrival city feature
autocomplete for arrival city name input
change onCreate() function in activities to init() function to inherit network handling function from AbstractBaseActivity
handled network error
added ArrivalCityInputView view
added variables to manage arrival cities input data
Merge branch 'master' into tourist_place

Conflicts:
	SmartTravel/AndroidManifest.xml
changed onCreate() method to init() method in AddTouristPlace activity
implement add tourist place