Consistent button order and name in Connector Table, like in Treenode Table.
Added refresh button to the Connectivity Table.
This way, even if a node of the shown skeleton is not selected,
it can still be updated.
Connectivity widget uses now requestQueue.replace.
Fix forgotten function name update in webglapp.js
Neuron/Skeleton names in Connectivity widget are now clickable
and select the nearest node of the skeleton.