[DF-2163] - extra elements aren't added now + adding children to the Aggregator Control is disabled.
[DF-185] removed copying of the list.
Merge branch 'to_master' of https://github.com/dava/dava.framework into to_master
[DF-1208], [DF-1711], [DF-1800] update gl depth buffer init
[DF-2294] fix header define
[DF-2293] update round logic
[DF-2311] - fixed changing properties for Platform/Screen/Aggregator nodes.
[DF-2316] - crash while editing UITextField Font properties is fixed.
[DF-1823] - UIControl::IsVisibleForUIEditor() is now recursive.
[DF-2330] - disabling VisibleForUIEditor() flag also removes this control from selection.
[DF-2310] - additional check for # of selected controls for Align/Distribute logic.
[DF-2344] Fixed memory leaks
Merge branch 'to_master' of https://github.com/dava/dava.framework into to_master