Support for deleting tags

When parsing tags, also keep track of the checkin uuid
Fixed key-value parsing
Prevent apply stash when nothing is selected

FossilOrigin-Name: 72ac541c4c28f83c94c371f2d81e116b8f3cf261

src/MainWindow.h

@@ -164,6 +164,8 @@ private:
 
 	bool				operationAborted;
 	stringset_t			selectedDirs;	// The directory selected in the tree
+	QStringList			selectedTags;
+	QStringList			selectedBranches;
 	QStringList			versionList;
 
 	Workspace			workspace;