Haxball Room Filter per uzayli

- Auto-skips the initial "choose nickname" dialog
- Adds a fast "leave" button on top right
- Adds a "refresh canvas" button if you experience sudden FPS drops
- Saves your preferences to hide empty / full / locked rooms
- Saves your text filters and the name / URL of the last room you joined.

To use multiple filters, separate them with commas, no spaces in between.

Example filter string if you want to find "futsal" and "longbounce" rooms: "futs,gbou"