tigefa Redmine

Treat Calendar and Gantt pages as separate modules. #6153

This will let the Issue Tracking, Gantt, and Calendar modules be enabled
or disabled as needed. A database migration will enable the Gantt and
Calendar for all existing projects that have Issue Tracking enabled.

Contributed by Adam Soltys

Fix the calendar link in the Issues sidebar. #5591

Contributed by Andrew Rudenko

Refactor: merge IssuesController#update_form into IssuesController#new

The #update_form action was only refreshing the issue attributes form,
so it's just a specialized JavaScript version of #new. This also removed
old code that was extracted in other places (@issue.new_statuses_allowed_to).

Fix the mock_file test helper.

Refactor: extract Members Box to partial.

Remove dublicate string

Localisation updates: New string to fix #5162

Refactor: move IssuesController#context_menu to a new controller.

Real RTL-theme support in locales (#6012)
Now each locale-file have direction string (ltr - left-to-right - by default).

Fixing #6009
Added to all locales required strings.