Connections & GestureRecognizers
introduce boolean empty_element_parsed_guard_()
don't search classes if there is dot in pattern

(cherry picked from commit f231438d3d50044033963cbdb4a5b0a9d7a69cf9)
fix one exception from IDEA-116497

(cherry picked from commit 1c6e2fa2aa81ba3c01c8660715e987f7b599fce1)
IDEA-116497 UI hang during index update [r=Eugene.Zhuravlev]
IDEA-116929 [regression] Ant: after rewriting to DOM API create target quick fix is missing