rethrow PCE from KeyedExtensionFactory reflection
(cherry picked from commit df8967b)
the users don't care if we're preparing editors to open (IDEA-115130)
(cherry picked from commit 9a116de)
don't show parameter info for invisible editors (EA-53161 - NPE: ParameterInfoComponent.<init>)
(cherry picked from commit fb24d98)
allow to turn off suggestion to create a file when creating a directory with file-like name (IDEA-118250)
(cherry picked from commit 5d81e8d)