injection pattern building - whitespace matching fix

(cherry picked from commit d5b495faa776499bd5e3dd9f449e0888f14467fa)
avoid O(N^2) filtering where N number of deleted directories
use native bytes order for bytebuffers in vfs / enumerator / persistent hash map
Make "Problems" icon gray is there is no problem inside
IDEA-114952 Eclipse code style import: would be nice to remember imported file location
ExternalSystem: project wizard refactoring (related bug - http://youtrack.jetbrains.com/issue/IDEA-115072)
a bit faster startup by more efficient extension registration
don't use rotten things in constructor dfa cache
avoid expensive class loading in resource bundles
a bit faster TaskManager initialization