Fixing performance issues found by Nastya here: https://youtrack.jetbrains.com/issue/CPP-4963#comment=27-1428213
– disabling OCGotoDeclarationHandler, because we have to work twice otherwise
– searching in text indices for a text of our element in CMakeCommandReference.resolve (instead of parsing/processing all the files)
- equals/hashcode in our references, so that ResolveCache would work

– fixing a few exceptions that sometimes appear during file editing

- minor helper method

Revert: IDEA-155679 Throwable at com.intellij.openapi.application.TransactionGuardImpl.submitTransactionAndWait (68c1920d)

Javafx: Simplify searching for custom components. Fixed library name calculation for custom components (IDEA-126664)

Corresponding methods are called where necessary from "ChangesBrowserBase" inheritors.