graph inference: infer from non-eq type bound
Merge remote-tracking branch 'origin/master'
IDEA-100454 Gradle: "Import" a jar to an existing library has no effect after changing Gradle User Home

1. Refresh local file system on processing new gradle jars;
2. Logging;
IDEA-95898 Gradle based projects should offer Auto-Import as Maven projects do

Iteration 2: every change keeps a creation timestamp now and outdated changes are automatically dropped
IDEA-100454 Gradle: "Import" a jar to an existing library has no effect after changing Gradle User Home

Refresh VFS for gradle files
IDEA-95898 Gradle based projects should offer Auto-Import as Maven projects do

Iteration 3: 'entity manage helper' part is extracted from 'gradle node manage helper' in order to be able to re-use that functionality on auto-importing