SOS-1919 upgrade SO announcements portlet notification to 6.2
SOS-1919 modify notification sender for so-hook.
SOS-1919 Move language key from so portlet to  so announcements portlet
SOS-1919 Add language key in so-portlet
SOS-1919 S/F
SOS-1919 Lang keys
LIFERAYQA-6206: Initial metadata commit