Various special node fixes/tweaks

- Fix secret passage nodes (CANT_ENTER with ex1a = 0, ex2a = 1) not working
- Set many flags now sets the entire row of 50 flags
- Division node now accepts either SDF to be null
- New mode for append item to buffer - adds the item's "interesting string" rather than its name
- Affect mage/priest spell inverted the meaning of ex1b relative to other affect nodes; this has been fixed
- Fix affect party status being confused about which fields mean what (the implementation had one idea, and the porting of old scenarios had a different idea, and the scenario editor had yet a different idea). In addition, it now allows removing the statuses.
- Fix some typos in special node information for the editor

rsrc/strings/specials-text-general.txt

@@ -383,19 +383,19 @@ Unused
 Special to Jump To
 --------------------
 Display Picture
-sdf1
-sdf2
+Unused
+Unused
 Picture title string
-msg2
-msg3
-pic
-pt
+Unused
+Unused
+Unused
+Unused
 Number of large (full-sheet) pic to display
-ex1b
-ex1c
-ex2a
-ex2b
-ex2c
+Unused
+Unused
+Unused
+Unused
+Unused
 Special to Jump To
 --------------------
 Have a Rest
@@ -472,26 +472,26 @@ Unused
 Unused
 Campaign Flag Part A (0..24)
 Campaign Flag Part B (0..24)
-ex1c
+Unused
 0 - Set Campaign Flag, 1 - Retrieve Flag
-ex2b
-ex2c
+Unused
+Unused
 Special to Jump To
 --------------------
 Debug Print Numbers
 Stuff Done Flag Part A
 Stuff Done Flag Part B
-msg1
-msg2
-msg3
+Unused
+Unused
+Unused
 0 - SDF, 1 - extra1 values, 2 - monster hp/mp
-pt
+Unused
 Number of monster, or value to print
 Value to print (could be a pointer)
 Value to print (could be a pointer)
-ex2a
-ex2b
-ex2c
+Unused
+Unused
+Unused
 Special to Jump To
 --------------------
 Multiplication