remove trailing white-spaces and empty lines from unit issue test.
remove trailing white-spaces from unit issue nested set test.
remove trailing white-spaces from unit issues helper test.
remove trailing white-spaces from functional search controller test.
remove trailing white-spaces from functional wiki controller test.
remove trailing white-spaces from functional projects controller test.
remove trailing white-spaces from functional journals controller test.
Bulgarian translation updated by Ivan Cenov (#8380).
remove trailing white-spaces from unit activity test.
remove trailing white-spaces from functional IssuesController test.
