don't require ast for original element retrieval
remove EquivalenceChecker duplication
calculate bound based on all type arguments (IDEA-57334)
do not rebound captured wildcard (IDEA-57325)
testdata for IDEA-67835
inference for ? super wildcard (IDEA-67744)
lagging action always enabled
if goto popup background calculation is canceled by write action (e.g. save), restart it
a way to keep disabled groups inside of compact groups
 no XSL in invalid tags