Add Mode and separation to fitting list.

Todo: A few exceptions are thrown when trying to remove mode via double click, spawn context menu, move to a different position, etc. All simply because Mode is not a Module. Will need to add try-except blocks to cover these instances

eos/saveddata/module.py

@@ -36,6 +36,7 @@ class Slot(Enum):
     HIGH = 3
     RIG = 4
     SUBSYSTEM = 5
+    MODE = 6  # not a real slot, need for pyfa display rack separation
 
 class Hardpoint(Enum):
     NONE = 0