GH158 - Action grouping/sorting
GH164 - Enter or double click => invoke Open action
GH155 - fixed bug: empty CM if all actions are on action bar
GH155 - Merge remote-tracking branch 'origin/GH158&GH164'

Conflicts:
	org.flowerplatform.editor.mindmap/flex_src/org/flowerplatform/editor/mindmap/MindMapModelPlugin.as
	org.flowerplatform.flexutil/src/org/flowerplatform/flexutil/context_menu/ContextMenu.mxml
	org.flowerplatform.flexutil/src/org/flowerplatform/flexutil/popup/ActionBase.as
	org.flowerplatform.flexutil/src/org/flowerplatform/flexutil/popup/ComposedAction.as
	org.flowerplatform.flexutil/src/org/flowerplatform/flexutil/popup/IAction.as
	org.flowerplatform.web.common/src/org/flowerplatform/web/common/explorer/ExplorerTreeList.as
	org.flowerplatform.web.git/flex_src/org/flowerplatform/web/git/GitExplorerTreeActionProvider.as
	org.flowerplatform.web.git/flex_src/org/flowerplatform/web/git/action/ChangeCredentialsAction.as
	org.flowerplatform.web.git/flex_src/org/flowerplatform/web/git/action/CheckoutAction.as
	org.flowerplatform.web.git/flex_src/org/flowerplatform/web/git/action/ClearCredentialsAction.as
	org.flowerplatform.web.git/flex_src/org/flowerplatform/web/git/action/CloneAction.as
	org.flowerplatform.web.git/flex_src/org/flowerplatform/web/git/action/CommitAction.as
	org.flowerplatform.web.git/flex_src/org/flowerplatform/web/git/action/ConfigRemoteAction.as
	org.flowerplatform.web.git/flex_src/org/flowerplatform/web/git/action/CreateRemoteAction.as
	org.flowerplatform.web.git/flex_src/org/flowerplatform/web/git/action/DeleteRemoteAction.as
	org.flowerplatform.web.git/flex_src/org/flowerplatform/web/git/action/DeleteRepositoryAction.as
	org.flowerplatform.web.git/flex_src/org/flowerplatform/web/git/action/FetchAction.as
	org.flowerplatform.web.git/flex_src/org/flowerplatform/web/git/action/ImportProjectsAction.as
	org.flowerplatform.web.git/flex_src/org/flowerplatform/web/git/action/MergeAction.as
	org.flowerplatform.web.git/flex_src/org/flowerplatform/web/git/action/PullAction.as
	org.flowerplatform.web.git/flex_src/org/flowerplatform/web/git/action/PushAction.as
	org.flowerplatform.web.git/flex_src/org/flowerplatform/web/git/action/RebaseAction.as
	org.flowerplatform.web.git/flex_src/org/flowerplatform/web/git/action/ResetAction.as
GH155 - cleanup