Bug #35842 improve Columns tab in table editor

Description:
One cannot tab continuously between controls on the Culumns tab of the table Editor.

Tabbing from a seleced cell in the grid (Coumns Grid) ends up in a dead-lock. More tabs are placed in the text-area Column Comment; one cannot tab continuously.
Use 

How to repeat:
1. Make a cell selectable
2. press tab a couple of times.
3. one ends up places tabs in text-area Columns Comment

Suggested fix:
The Columns panel can be improved.
Firstly, properties collation and flags can be added to the grid
Secondly, it should be able to move horizontally in the grid alone, without reaching to the Column Comment.

Multiple strategies are possible, I propose my preferred strategie in conjunction with (http://bugs.mysql.com/bug.php?id=35841):
ctrl + arrow-left key moves to previous cell in the grid
ctrl + arrow-right key moves to next cell in the grid

Note that tab behaviour is currently broken, it skips columns in the grid.

Thank you for a reasonable feature request.