enable to add nodes as child of selected node
restructure tree controller
change tree controller
add form to add node function
enable drag and drop in tree
select correct id of nodes
add function to remove selected node
close remove windows when confirming action
make popups modal windows
change total height of interface
change text for confirmation button
add windows for data edit
add window for data edit
rename edit window
replace form window for node creation
change windows for node creation
add data, model and store for allemeine metadata
add default value to form
add git ignore file
ignore vim swap files