Updated target sdk version to 25

[ftsalamp]

The camera crash bug does not seem to exist anymore. Another fix probably solved this issue too.

[misaochan]

Travis build failure:

fr.free.nrw.commons.SettingsActivityTest > oneLicenseIsChecked[test(AVD) - 5.1.1] FAILED 
	android.support.test.espresso.NoMatchingViewException: No views in hierarchy found matching: (is descendant of a: with id: android:id/content and with id: android:id/list and has focus on the screen to the user)
	If the target view is not part of the view hierarchy, you may need to use Espresso.onData to load it from one of the following AdapterViews:android.widget.ListView{bce05 VFED.VC. ......I. 0,0-480,678 #102000a android:id/list}
:app:connectedDebugAndroidTest FAILED

Anyone know what the cause of this is?

[whym]

It looks like the exisitng tests didn't work with SDK 25.

It should be fixed with #666.