User-defined rules.
Changed file layout.
Reorganised sources into smaller files.
Enhanced the debug panel.
Improved the "user rules" panel.
Slightly improved the "user rules" panel, again.
DK: fixed Soul Reaper target.
README update.
Added a class restriction to user rules.
Allow "print()" in user rules for debugging purpose.
Warlock: moved Havoc suggestion in another rule.

Fixes GH-47.
Warlock: fixed Pyroclasm.
Error about access to unexistent globals un rules.
Added a "SafeGetGlobal" helper, that does not choke on nil values.
Merge branch 'master' of https://github.com/Adirelle/AdiButtonAuras

Conflicts:
	rules/Warlock.lua