When layout has only small buttons (buttons with icon and without label) its size should be fixed. Code was modified to be able to add a new UI_ITEM_MIN flag which indicates that the layout has only small fixed-width buttons. Patch by @raa, with minor style edits by @mont29. Reviewers: Severin, mont29 Reviewed By: mont29 Tags: #bf_blender, #user_interface Differential Revision: https://developer.blender.org/D2423