add script for packaging KA Lite into a zip file.  Exclude test stuff, options for locale,platform,and server_type
Setting up apps and variables, such that central server and testing code can be excluded from script.
added comment, remove duplicate addition of central app.
get platform default value from current platform
enable platform-free packaging (keyword: all)
Merge remote-tracking branch 'upstream/develop' into package_kalite
don't need these packages
Merge remote-tracking branch 'origin/package_kalite' into install_wizard

Conflicts:
	.gitignore
	kalite/settings.py
A semi-functional wizard that produces a zip file.