Merge pull request #31 from codenvy/IDEX-1247

IDEX-1247 IDE hangs on Retrieving SSL Server certs...
IDEX-1400
Removed usage factory handler
Merge pull request #32 from codenvy/factory2

Removed usage factory handler
Added method setting visibility during imports source
Remove border from tree component
Merge pull request #33 from codenvy/reworkImportProject

Added method setting visibility during imports source
Merge pull request #34 from codenvy/fix_tree-UI

Remove border from tree component
IDEX-1247 IDE hangs on Retrieving SSL Server certs...