Update styles.xml

Updating notification Text for Theme chooser

Change-Id: I32eec73c95ade37c36c03b4ef319beb5e81ed19e
Move translations I made in strings.xml to  custom_strings.xml

Change-Id: I63f0ae2840a34f44cb6a63c62db6703702501302
Merge "Move translations I made in strings.xml to  custom_strings.xml" into du44
Merge remote-tracking branch 'upstream/du44' into du44