atk4/atk4 — pull request #162 by DarkSide666 (2012-11-10 00:33:31+00:00)
Title: Fixes for Grid panel

**Issue:**
Even if no buttons and no quick-search form is added to grid, it still show empty grid-panel block.

**Solution included:**
1. Organize grid buttons (in grid-panel) in buttonset. That have 2 bonuses. First, it's easier to add CSS styles to them, and second - it looks nicer when you have more than 1 button in top panel.
2. Slight changes in quicksearch form CSS. In fact, introduced new css class atk-quicksearch too. That will also help developers to define their CSS of quicksearch block.
3. Removed margins from grid-panel (because if it's empty, then it should not be visible) and moved these margins to buttonset and quicksearch block. So, they will be effective only if one of above will be enabled / used.
4. Also removed some not used variables.