5.0 Milestone 1

• Rails upgraded to 4.2.x along with major upgrades to many gems. This resolves some security issues with running the old version of Rails now EOL.
• Better display of milestone and task forecast dates
• Milestone starting date
• JRuby upgraded to 9.1 with the promises of better performance
• Support for MRI ruby versions below 2.2 is now dropped
• Support logstash
• Lots of improvements to security. No known security holes existed before, but now there are more checks, explicit routes and explicit params which can be modified
• Fix invalid timezones for some users