Fix minor icons layout and margins.
Add "Use max width for side regions" settings who allow to restrict the width of the side region when using a wide screen.
Fix categories icon who displayed text instead of icons.
Merge pull request #98 from leblangi/regionmaxwidth-master

Add "Use max width for side regions" settings who allow to restrict the ...
Merge pull request #101 from leblangi/minoriconslayout-master

Fix minor icons layout and margins.
Merge pull request #102 from leblangi/fixcategoriesicon-master

Fix categories icon who displayed text instead of icons.
Manually moving in new Git Pull from leblangi
Fix three column layout merge with the colours picker.