Update strings.xml

Updated german string, not sure about "Submit restrictions", Does it mean something like "Save restrictions"?
Merge pull request #497 from SebRut/patch-1

Update strings.xml
Updated changelog
Updated Swedish translation
Updated polish translation
Merge pull request #499 from skibbipl/patch-10

Updated polish translation
Merge pull request #498 from lklun/master

Updated Swedish translation
Update changelog
TelephonyManager: no context for static methods
Updated Portuguese translation