Add better flexibility to the datagrid templates.
Review Request #7215 — Created April 16, 2015 and submitted
The datagrid templates now offer a couple of new blocks for controlling the styling of the page. One is the datagrid_titlebox block, which contains the matching div. This can be used to provide additional content before, after, or in place of the titlebox without needing to resort to hacks. The other is the "paginator" block, which wraps the paginator. This allows the paginator to be removed or replaced.
Made use of these in another change.
Tool: Pyflakes Ignored Files: djblets/datagrid/templates/datagrid/listview.html Tool: PEP8 Style Checker Ignored Files: djblets/datagrid/templates/datagrid/listview.html