Allow widgets to display error messages in the front end by raising a WidgetError (while other exceptions only display a generic message so as to avoid potential security leak)

Transport itemcount time

small ui bug fixes on dashboard widgets

The transport layer term_itemcount when called with a date range
now returns terms that fall outside the range with count=0.

Use api to list terms

Fixed wording of categories and short names

-- replaced {{name}} with {{title}} on chart widget template
-- added h2 tag around bar chart table template title
-- fixed icon span class

ViewItem.get_category_options should return the options as we want them - we shouldn't have to process them later. So make sure it returns (short question, short question) as we want both the value and the text to use the short version.

Merge branch 'view_and_edit_technical_debt' of git.aptivate.org:internewshid into view_and_edit_technical_debt

-- view-edit screen has no padding around table
-- developed by aptivate - disappears on smaller screens
-- view-edit screen has no padding around table

-- page-title disappears under header on tablet width
-- page-title has no padding/margin on left side on smaller screen

Refactor add_items_categories and add_categories into a single call, and make the taxonomy slug configurable at that level (it's now hard-coded in process_items). Update tests to match the change and ensure we can update multiple items at the same time.

Make the default empty batch command a line of dashes under the 'Actions' header. We can't really do better than that without js.