Bug 12365: (follow-up) Adding maxlength attribute and popover

Bug 12365: (follow-up) Adding maxlength attribute and popover

Test that you can't add a note of more than 100 characters.
Test notes with rules, notes are hidden by 'View note' and the
popover correctly displays note.
View the note by hovering over the link
I've moved the Note column so the popover displays nicely and doesn't
cover the buttons. I've also changed the placement so that it doesn't
cover information in the row.

Update: Test that you can edit the note when clicking 'Edit' and that
behaviour is the same for editing all other fields

Signed-off-by: Michal Denar <black23@gmail.com>
Signed-off-by: Michal Denar <black23@gmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>