No sharedprefs methods in ConfigHelper.

This means we obtain the SharedPreferences object each time we want to
use it. This yields to longer code lines while reading and writing to
them.
Substituted AboutFragment with AboutActivity.
Android support library v4 added.

Look at https://leap.se/code/issues/5062#note-3:
I'm going to remove android-support-v4.jar from .gitignore based on https://developer.android.com/tools/support-library/index.html#overview and http://www.in-nomine.org/2012/02/26/adding-android-support-v4-to-your-android-application-in-intellij-idea/
testSwitchProvider updated.

It shouldn't expect the previous provider to be back again pressing the
back button after hitting "Switch provider".
New method to set on/off data connection.

Used in tests, but it's going to be used in the near future when
blocking data connections until EIP is on.
Set data connection status works.

Tested both in real device with Cyanogenmod 4.3.1 and in api 18
emulator.

Next step: wi-fi toggling.
Wi-Fi on/off method in ConnectionManager for tests
Merge branch 'feature/remove-shared-preferences-methods-from-ConfigHelper' into develop

Conflicts:
	src/se/leap/bitmaskclient/Dashboard.java
Merge branch 'bug/about-fragment-legacy-references' into develop
Select VPN gateway by least timezone difference
Better host matching when updating gateways list
Explicit startService() for updating EIP definitions
Merge branch 'feature/timezone-vpn-gateway-selection' into develop
Remove obviated settings entry from Dashboard menu
Merge branch 'bug/remove-settings-menu' into develop
Transifex configuration
Remove stowaway values-nl folder that was commited to res/values/ folder
Merge branch 'feature/transifex-configuration' into develop
changelog release flavor text added
Bump build and version number for RC1