Close on HOME and Clarify Manifest.

The manifest now explicitly states what the Settings Activity parent is
for older API versions. Making it work properly.

The Activity now just closes when it loses focus. Including the home
button.

This is the basic idea for #53 but still needs to have considerations
for opening things like the camera app.
Fix conflicts and make the closing selective

The application now does not close if the camera of file picker requests
are made.
For the other situations it just closes the app.
Apply codestyle and javadoc changes.

Apply the codestyle to ContentFragment and HomeActivity
Create javadoc for the changes to the HomeActivity onStop() method.

Uncomment piece of code that had been out for testing purposes.
Merge branch 'master' into back-button-close

Conflicts:
	AndroidStealth/src/main/AndroidManifest.xml
	AndroidStealth/src/main/java/com/stealth/android/HomeActivity.java
	AndroidStealth/src/main/java/content/ContentFragment.java
Fixed formatting in edited files
Merge pull request #61 from AlexKolpa/back-button-close

Close app on onStop()