IDEA-111241 Gradle: 'Open config' action is not available for subprojects with changed name

1. Gradle tooling api is extended to provide information about build script file path;
2. Gradle jars from 1.8 nightly branch are applied (they contain the api change);
3. Gradle api changes are used by IJ gradle integration now;
4. Don't report errors on cached task nodes processing because there is a possible case that they hold old incorrect build script file path;
cleanup, Overrides
continue WI-17365 internal web server should serve PHP files
EA-30882 - assert: ComponentManagerImpl.getPicoContainer