Add Transifex configuration file to store the project’s details and the file-to-resource mappings.
Change Transifex config file from using GNU gettext .pot template and *.po translation files,  to using QT`s *.ts file format for both template and translation files
Respect existing naming scheme for translated files. Change Transifex config accordingly.
Merge remote-tracking branch 'origin/master' into master-translations-update
Merge remote-tracking branch 'upstream/master' into master-translations-update
Merge remote-tracking branch 'upstream/master' into master-translations-update
Cherry-pick fix from gtest to fix compilation with libc++ standard library.
Get rid of hard-coded framework path in OpenGL detection.

Instead, rely on "-framework OpenGL" to make

#include <OpenGL/gl.h>
#include <OpenGL/glu.h>

work properly.
On OS X, automatically select a suitable sysroot based on available SDKs.

This provides OS X 10.9 users with a "no fiddling" default build setup. It may
cause pain to advanced builders. If a sysroot option is manually provided then
automatic detection is disabled.
Specify OS X frameworks using SCons FRAMEWORKS variable.
Merge remote-tracking branch 'upstream/master' into master-translations-update
Pull latest translations from Transifex
Compile QM files out of TS files that is used by the localized app.
Delete unused GNU Gettext Localization & template files. We exclusively use QT`s TS file format for pushing the Translation template to, and pulling the translations from Transifex.
Merge pull request #171 from esbrandt/master-translations-update

Move i18n from Launchpad to Transifex
fix #1273333. Don't rollback on cancel

Only rollback the library if we had another problem then canceling the
recursive scan.
save hashes only after we scanned a folder
Add ColumnCache class for maintaining a reverse index of column to position and
doing efficient column index lookups.
Switch BaseTrackCache and BaseSqlTableModel to use ColumnCache.
Add LIBRARYTABLE_PREVIEW definition.