Mms: SK translations

Change-Id: I06921a1e21b63d6b6fdc54d56a04479807865ab6
Mms: PL translations

Change-Id: I5b69f10aec26b1ebd7c3520a3f3c0b59a275342c
Merge "Mms: PL translations" into cm-10.2
Mms: findPart may still be null

This partially reverts 2757db88a16af8197243025a9393367a6ebba3e1 commit, because
pb.getPartByContentId("<" + src + ">"); may return null. Throw the old IllegalArgumentException
if this happens.

Change-Id: If19b7295131dcc834553b68acc4e25b0fba7dab9
JIRA: CYAN-2100
Issue: https://jira.cyanogenmod.org/browse/CYAN-2100
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Merge "Mms: SK translations" into cm-10.2
Merge branch 'cm-10.2' into martincz