Changelog.
Adds migration for work package journals.

Foreign keys of journals now get the content of the new work package.
This previously broke planning element journals.
Adds proper error for MySQL.
Merge pull request #590 from opf/feature/journal-migrations
Fix board edit/update validations, add success flash message
Merge pull request #584 from opf/fix/board_edit_validations
new version; updated changelog
Fix pagination links of project settings members tab after AJAX update
Adds changelog entry
Merge pull request #592 from opf/bugfix/2625_project_settings_members_pagination
scope users by their visibility so that admin rights are not required
changelog

Conflicts:
	doc/CHANGELOG.md
Merge pull request #593 from opf/fix/scope_user_visibility

Fix/scope user visibility
merged feature/rails3 into feature/rails3_custom_fields_api