factorize access to local static files and fix imagestar function, stash unused archeology of script variants for future decision to clean or integrate

cf. same for jsons in de6b4496

make noverlap account for new node sizes slider ; adjust legends after changetype ; etc

TW.ByType offers faster access to nodes by type + various clarifications with new typestring

towards a more transparent changeType structure and typestring syntax

use of edges(eid).hidden makes filters faster + rationalize function signatures + remove comments

also fixed an fa2 condition

for servermenu mode, let the nodetypes be stipulated by graph source

click effect is a normal selection now + color menu is updated by type + fix bug in int index for cluster colors