Refactor TestPolygon/TestPolygon unit tests to use helper class
Add failing tests for createPolygon/createPolyline with column input
Fix createPolygon/createPolyline for column vector input
Handle removal of user from last group. See #11875

Conflicts:

	components/tools/OmeroWeb/omeroweb/webadmin/views.py
Fixes and docs from PR #1935

Conflicts:

	components/tools/OmeroWeb/omeroweb/webadmin/views.py
setMembersOfGroup returns ExperimenterWrapper list
Improve error message for removing users
Remove whitespace.
Remove tabs and whitespace.
Do not allow to enter more than 256 characters.
Clean up code.
Remove tabs and whitespace.
Override the setText method to parse the text.
Reset the font and text.
Update metadata viewer.
Update header.
Remove import
Do not modify the font and handle long name.
Resize components as suggested by Petr.
Merge pull request #1974 from sbesson/rebased/develop/matlab_polyline_columns

OMERO.matlab: allow column input for Polygon/Polyline (rebased onto develop)