Updated Environment Lighting Editor

Fixed a bunch of UI issues that I didn't realize existed in the last version.
Added the FSHelper class which will contain read/write functionality for FileStreams to ease Endian-ness issues.
Enabled Save/Cancel buttons in Editors.
Added Tools menu, contains a Spawnpoint Editor, Exit Editor and Environment Lighting editor.
Enabled the "Save" buttons in Editors - ONLY DUMPS CHUNK TO DISK ALONGSIDE EXECUTABLE, DOES NOT SAVE INTO DZS FILE YET!
Added stickywindows to support cool popups!