Lots of monster stuff, particularly documenting monster abilities

- Monster radiate abilities can now specify a spell pattern to use
- Fix some abilities being incorrectly shown in the editor's ability details dialog (for example, radiate abilities were shown as "Summon aid")
- Add the recently-added monster missile types to the options offered in the editor
- Fix chance of activating not being editable for the martyr's shield ability
- Show the monster summoned for summoning abilities (finally!)
- Show the subcategory for unusual abilities (one of active, passive death)
- Fix the displayed percentage chance for summon abilities (the permille was shown instead)
- Fix incorrect action point display in the editor for the two recently-added monster missiles
- Fix crash when editing a missile ability
- Fix abilities page not showing the newly-added or recently-edited ability after exiting the detail/option dialog
- Fix pick monster button for summoning abilities being off by one

rsrc/dialogs/edit-mabil-radiate.xml

@@ -17,6 +17,10 @@
 	<text top='164' left='10' width='120' height='16'>Radiate Chance:</text>
 	<field name='odds' top='162' left='120' width='50' height='16'/>
 	
+	<text top='192' left='10' width='100' height='16'>Area Affected:</text>
+	<field name='pat' top='190' left='120' width='50' height='16'/>
+	<button name='pick-pat' type='regular' top='187' left='180'>Choose</button>
+	
 	<button name='okay' type='regular' top='216' left='330'>OK</button>
 	<button name='cancel' type='regular' def-key='esc' top='216' left='265'>Cancel</button>
 	<button name='delete' type='regular' top='216' left='10'>Delete</button>