v1.5.1

This is a minor update with several bug fixes and small improvements, plus a few new scrum-oriented features.

Features

• Size estimations for backlog items #293, #296, #299, #307
• Easier dashboard widget management
• Project owner colors now display in the backlog #301
• The current date is now highlighted on date pickers
• Updated Russian translations #285
• Polish translation

Bug fixes

• Single user issue tree view now loads correctly
• Translated text with special characters no longer causes errors
• Inaccurate error message when adding users was updated
• Timezones are handled correctly for all server configurations in cron jobs
• Configuration file is now secure by default on nginx #284
• A workaround for Chrome's scrolling change fixes the Edit hotkey #294
• Close button is more visible on phproject theme #298
• Dashboard widgets no longer break if no types match their filters

Backend changes

• Fat-free framework updated to v3.6.1
• PHP 5.4 and 5.5 are no longer officially supported
• PHP 5.6-7.1 are supported and tested with Travis CI