This patch unifies the Python and Angular table styles (there is no
reason for them to look drastically different).
- Clean up table header in _data_table.html
- Remove page_header styling for default theme, as it causes the angular
panels to shift downwards on the page
- Removed styling workarounds from default themes
- Removed several chunks of angular specific scss code, including the
'modern' class
- Removed the "Actions" header in python tables, to match Angular
- Removed duplicate 'no items to display' info in footer, when table is
empty.
- Also fixes the Containers header, which was different to all the
others
Closes-Bug: 1517081
Co-Authored-By: Diana Whitten <hurgleburgler@gmail.com>
Change-Id: Id71aab6e8bbbcd1f7fa4d5575156e4d3c6aa990d
b69ff722c1