IDEA-124956 PsiShortNameCacheImpl.getClassesByName() is O(N^2)
(cherry picked from commit a0a681e) [r=Peter.Gromov]
move TraceableDisposable's own trace to the bottom as the least important
(cherry picked from commit 73d32e6)
EA-54691 insert completion char in write action
(cherry picked from commit 4b22fa6)