housekeeping

• Reduced the priority of container items themes => a theme defined inside a class config now wins
• Polished the component logger to no longer show duplicate items
• examples.grid.nestedRecordFields.ViewportController: updated the theme switching logic to match the controller scope

All changes in 1 commit: https://github.com/neomjs/neo/commit/ee3ade1f98c0ecaa45e6693fa26d2ea33a84be7d