Smaller font in context menu.
Adds category to the issue context menu (#1684).
Adds support for wiki links with anchor (#1647).
Adds Trac-Like anchors on wiki headings (#1647).
Follows r1703.
Activity provider example in sample plugin.
Adds #activity_provider shortcut method to the plugin API.
Activity refactoring.
Fixes tests (r1693).
Adds child_pages macro for wiki pages (#528).
