link gates in sidebarlist
split nodenet.py into smaller files
correct fix for control buttons

btn groups need to be divs!
data-target-select dialog for adding actors
make tests pass again
drag multiple nodes at once
Merge branch 'dev'
scroll to object/agent in world view, label agent

enables scrolling the agent or object into the viewport in world view.
adds labels to the agents
add a cancel button to edit/add object
add worldobject in screen center or at click position
fixup to splitting nodenet code
fix add/remove monitor

only offer to add a monitor to slot/gate if none present. otherwise, offer to remove monitor
fix editing gate params
allow to set gate_parameter_defaults

via source and per nodetype.
fix node context menu
fix issue in gate_selection, link_creation

 * if you right click on a gate of an unselected node, this node should become the only selected node
 * if during link creation, you clicked on an empty spot, an error was thrown, since path was undefined
fix deletion of nodes/links via backspace
rightclick on a node or gate deselects other nodes
exclude selected gates from moving
fix entering nodespaces