Applications Menu should be scalable on multi-row panel

Submitted by Konstantin Svist

Link to original bug (#11451)

Description

I have a 2-row panel and would like the Applications Menu button to be 2x2 sized.
Right now it takes up 1x2 (1 column, 2 rows) but icon is 1x1.
Ideally it should probably have a choice to make it 1x1 or 2x2. Not sure if anyone really wants it to be 1x2

Version: 4.10.1