[FIX] Fixed warnings about unused typedefs.

git-svn-id: http://svn.seqan.de/seqan/trunk@14532 e6417c60-b987-48fd-844e-b20f0fcc1017
[INTERNAL,FIX] Fixed issue with calling internal string assign function for journaled sequences.

git-svn-id: http://svn.seqan.de/seqan/trunk@14533 e6417c60-b987-48fd-844e-b20f0fcc1017