Move from slf4j-android to android-logger.

AndroidLogger is more flexible than slf4j-android, and allows us to set
per-package logging cutoffs. Also, it is smaller in size.
Merge pull request #2 from nightscout/master

Latest dev
Updated strings
Updated strings
Added TimeChangeDetected string
Added TimeChangeDetected string
Merge pull request #98 from nightscout/tr.toAndroidLogger

Move from slf4j-android to android-logger.
Only display battery when root option is enabled
Corrected mistake in strings

Fixed pref_header_cloud_storage, pref_dialog_mongodb_collection, pref_message_mongodb_collection and pref_default_mongodb_collection
Merge branch 'dev' of https://github.com/cgmnellanuvola/android-uploader into cgmnellanuvola-dev

Conflicts:
	app/src/main/res/values-it/strings.xml
	app/src/main/res/values-it/strings_activity_settings.xml
	app/src/main/res/values/strings.xml
Clean up the settings activity. Because we are targeting sdk > 11, we
can remove a lot of cruft.

Add some preference validation. Add tests for validation. Note: this
only validates uri syntax, not if the hosts actual exist. That will come
later as a button (or something).

Tested:
  ./gradew clean test