multiply Library Folders feature from library_features branch, builds untested
fixed update code and removed useless stuff from initial patch
dlgprefplaylist uses library instance instead of sql connection
basic track adding works
directoryDAO query don't work with bindvalue
directory doa works with bindValue now

Because Fieldscaper add '' marks around a direcotry entry Qt can't work
with them straight after I get them out of the library. To make
everything work again I just need to replace ' with an empty string
remove checksums from schema.xml
code clean up
remove relocate feature
Merge branch 'master' into multiplyFolders
remove more code
remove more code
added MAINDIR_ID to missingtablemodel.cpp
clean up mess
Merge branch 'master' into multiplyFolders
remove old merge conflicts
still problems with relocating a directory
Merge branch 'master' into multiplyFolders
Merge branch 'master' into multiplyFolders
merge with master branch