Speed optimized ramping
dlgtrackinfo.ui - fixing vertical spacer height
it was introducing a bug on Windows7
CoverDeletage - cropping and adjusting the cover to fit in a cell
Fix bug when cover column is smaller than cover.width
fixed typo
FIX:1311359 add close button to dev-mode window

GTK3 does not add close buttons to a dialog window by default. Since
this is not a Dialog which requires input change the window type to
Qt::Window
Cosmetic fixes for SoundSource class - rename "getQString" to "toQString"
Merge branch 'master' of https://github.com/mixxxdj/mixxx into coverArtSupport

Conflicts:
	src/trackinfoobject.cpp
redesign dlgtrackinfo.ui - remove excessive group_layouts + loading cover_art on the right side
- It is very important that all fields have the same vertical spacing. I noticed that the only way to ensure it is drawing all fields in the same box_layout...
dlgtrackinfo - rescaling covers before insert as an icon of the pushbutton
- the qpushbutton will rescale just covers which are bigger than the icon bounds, so it is important rescale all of then to ensure that it will always use as much space as possible...
Merge branch 'coverArtSupport_2' of https://github.com/cardinot/mixxx into coverArtSupport_3
coverdao - fixing bug with the database schema: making LOCATION not unique

Currently we are identifying covers by looking for md5hash and it must be unique (obvious reasons).
In cases when the user overwrite the cover file in the trackdir, it will have the same location but an different md5hash.
In this way, coverdao would try to store the new cover (new md5hash) but it would not be possible since it would have the same location as the old image... so, as the md5hash already is unique, we do not need to mantain unique locations as well...
wcoverart - rescale covers with Qt::KeepAspectRatio instead of KeepAspectRatioByExpanding
SoundSource - checking if taglig::string is null

Taglib strings can be NULL and using it could cause some segfaults, so in this case it will return a QString()
Merge pull request #193 from cardinot/master

Bug #1197631 fixed - Track properties box expanding badly
CoverArtDelegate - drawing rows before doing the coverpixmap stuff
Merge pull request #295 from kain88-de/developerCloseButton

FIX:1311359 add close button to dev-mode window
CoverArtDelegate - using previous cover_delay to lock/unlock the coverdelegate::paint()

If the CoverDelegate is locked, it must not try to load and search covers.
It means that in this cases it will just draw covers which are already in the pixmapcache.
CoverArtDelegate - extending same logic used to delay cover_loadings when the user is scrolling fast
fixed typo in include guard