NXDRIVE-40: Allow to not remove esky freeze output directory after zipping it
NXDRIVE-40: Zip esky freeze by default and don't remove freeze directory afterwards (to be able to use it as a base for the MSI package)
NXDRIVE-40: Fix boolean options badly handled
NXDRIVE-40: Don't create zip file from esky freeze under OS X (seems to not embed all files from the bundle, eg. PyQt Framework stuff...)
NXDRIVE-40: Improve and comment DMG creation script
NXDRIVE-40: Zip application bundle after creating DMG to make it available as an update
Merge branch 'feature-NXDRIVE-40-release-process'
NXDRIVE-40: Use constant for output dir 'dist' in setup.py
NXDRIVE-40: When version is fixed for freeze (using --dev) create JSON metadata file for frozen app, needed for release deployment to update site
Merge branch 'feature-NXDRIVE-40-release-process'
NXDRIVE-40: Create output dir if not exists before creating JSON metadata file in it
Merge branch 'feature-NXDRIVE-40-release-process'