[INTERNAL] internalized strings in SharedProject class

Do not know which clown pulled them out ...

Change-Id: I8ae7ad02867a4d675010b5de032c74011c4c4b2f
Reviewed-on: http://saros-build.imp.fu-berlin.de/gerrit/1945
Tested-by: Jenkins CI
Reviewed-by: Stefan Rossbach <srossbach@arcor.de>