Preliminary backend support for tactical destroyer modes.

* Modifies fits table to add "mode" column, which contains typeID of mode for fit
* Introduces Mode type, similar to Ship and Module type
* Includes effects for Amarr Tactical Destroyer Propulsion Mode

Still a lot to do: GUI switching, constraints on which ships get modes, etc

eos/types.py

@@ -32,6 +32,7 @@ from eos.saveddata.booster import SideEffect
 from eos.saveddata.booster import Booster
 from eos.saveddata.ship import Ship
 from eos.saveddata.fit import Fit
+from eos.saveddata.mode import Mode
 from eos.saveddata.fleet import Fleet, Wing, Squad
 from eos.saveddata.miscData import MiscData
 import eos.db