Initial implementation for BaseActivity, LoginActivity and MainApp classes
Copied over mojio's config class
Updated Strings.xml with some error messages
Updated default Config value
Added missing constructor for MainApp
Merge branch 'master' of github.com:rockyhe/MojioTowingAlert

Conflicts:
	Src/eecegroup32.mojiotowingalert.android/Resources/Resource.designer.cs
Updated resource.designer.cs
Fixed issue when instanting mojio.client with no TokenId
Merge branch 'dev.rocky.login'

Conflicts:
	Src/eecegroup32.mojiotowingalert.android/Resources/Resource.designer.cs
	Src/eecegroup32.mojiotowingalert.android/Resources/values/Strings.xml