Changelog for both Community Edition and Enterprise Edition

• Fixed get_events api method
• Fixed Docker support
• Fixed using specific MongoDB driver (fixes undefined name property crashes after installation)
• Fixed socket options for more stable connection to mongodb
• Push bug fixes
• Improved dashboard loading by combining localizations and css files
• Improved Push performance
• Added upgrade script to 15.03 version from older versions
• Added github core update script, to update installations cloned from github
• Moved all dependencies to Countly root folder
• New minification through uglify, no need for heavy java dependencies
• New API v3 requests for Loyalty, Session frequency and Session durations
• Allowing to change device_id