Redmine

Add indexes on various timestamps to speed up the activity view.

Added project specific Enumeration overrides.

These will be used to track if Enumeration's custom data or active state
is overridden on a project. An overridden Enumeration is one that is associated
with a parent Enumeration.

#4077

Added an active field track if an Enumeration is active on the frontend view.

• Changed TimelogHelper#activity_collection_for_select_options to only use
  active TimeEntryActivities.
• Changed TimelogHelper#activity_collection_for_select_options to return a blank...

Adding missing database indexes for foreign keys and STI fields.

Fixes User/CustomValue association broken by r2869 (#3978).

User groups branch merged.

Fixed: editing a message may cause sticky attribute to be NULL (#3356).

Changed Enumerations to use a Single Table Inheritance

• Added migrations to change Enumerations to an STI relationship
• Added TimeEntryActivity model (STI)
• Added DocumentCategory model (STI)
• Added IssuePriority model (STI)
• Added Enumeration#get_subclasses to get a list of the subclasses of Enumeration...

Clear member_roles table before populating it.

Allows multiple roles on the same project (#706). Prerequisite for user groups feature.