Gadget cleanup. Standardized synced check for synced-only gadgets. Some changes to rarely used gadgets for testin:
 * Zombies sound disabled.
 * Rezz sound and effects removed.
 * Lavarise visuals disabled.
 * Unit ranks fail to draw. Also morph merge may need fixing.
 * Disabled ceasefires.
 * Disabled Bounties.
 * Disabled capture the flag.
 * Disabled Animator (should be moved to dev mutator)
 * Disabled Dev Commands (should be moved to dev mutator)
 * Disabled Recorder (Load)
 * Disabled DoLine. It draws no distinction between synced and unsynced and I do not know what it is for.
Merge branch 'master' of https://github.com/ZeroK-RTS/Zero-K