IDEX-1174: preserve expanded items in the 'Project Explorer' after modifying any items in the tree
Merge with remote master
IDEX-1174: prevent situation when no selected item in the 'Project Explorer'
IDEX-1174: code refactoring; fix renaming opened files
Add ability to open file by pressing Enter key in 'Project Explorer'
IDEX-1174
IDEX-1174
IDEX-1174
Merge branch 'master' of github.com:codenvy/ide