Fix for module config console errors

Fix for issue #11. Avoid console errors when selecting modules in the Module Config screen.

Better Config Templates, Auto refresh

Switch to better approach for injecting Light Mask settings into the light/sound configuration applications. This should greatly improve compatibility with other modules that might modify the light/sound configuration.

Setting the prototype token and world default token settings for Light Mask should now work properly. Removes the wall cache parameters when configuring a prototype token or default token because those must be set at a per-scene level for a given token.

Sound and Token configurations now refresh instantaneously when changing the parameters of a sound or light shape, respectively.

Fix caching token position for relative walls

Fix when caching walls relative to a token, to prevent the walls from "shifting". Fixes #10.

Fix multiple wall caching

Fix to catching multiple walls with unlimited vision (fix bounding box issues).

Fix for caching custom walls

Fix to re-enable catching walls for light sources. (Accidentally borked in 0.3 series.)

Ellipses!

Add option to use ellipses.

Minor updates from Walled Templates

• Incorporate improvements from Walled Templates v0.3.0.
• Added localization to settings.

Improved Wall Height compatibility

• Do not overwrite the origin object to improve compatibility with Wall Height. Fixes #9.
• Use Cohen-Sutherland approach to classifying zones around a rectangle to improve segment intersection identification.

Token lighting

Adds ability to select shapes and custom edges for token lighting.

Hidden sides/point fix

Fix #8. Points/Sides no longer hidden until shape changed.