Cleanup (file chooser descriptor API enhancements; incorrect usages fixed)
Cleanup (unused action; pointless action groups)
Cleanup (incorrect usages of project file chooser fixed)
add note about HttpConfigurable config storages
compute storageSpecs only if need
NotNull
cleanup
cleanup
cleanup
cleanup
cleanup
IDEA-30564 No HTTP proxy host name validation

We must not save invalid Http Proxy configuration. Proxy credentials also checked.
IDEA-128713 (less file stat requests from project file chooser)
Merge remote-tracking branch 'origin/master'
VFS test fix