Mega Macro

Uses less memory, and fixes the macro editor and macro changes in combat.

- **Memory:** spell icons are only scanned when you search, instead of being kept in memory all the time. You can also search icons by ID.
- **Macro editor:** coloured text now stays lined up with what you're typing, and the doubled scrollbars are gone.
- **Combat:** macro edits made in combat now apply when combat ends. Creating, deleting or moving macros in combat is refused with a message, and reloading in combat is handled safely.