Largely rewrote and refactored the help system.

The help entry database structure has changed! You have to resync or purge
your database or your will get problems!

New features:
* Help entry access now fully controlled by evennia permissions
* Categories for each help entry
* All entries are created dynamically, with a See also: footer calculated
  after the current state of the database.
* Indexes and topic list calculated on the fly (alphabetically/after category)
* Added auto-help help entries for all default commands.
* Only shows commands _actually implemented_ - MUX help db moved into 'MUX' category
  which is not shown by default.
* More powerful auto-help markup - supports categories and permissions (and inheritance).
* Global on/off switch for auto-help, when entering production
* Auto_help_override switch for selectively activating auto-help when developing
  new commands (like the old system).
* Refactored State help system; no more risk of overwriting global help entries.
* State help now defers to main help db when no match found; makes system more transparent.
* State help entries also support categories/permissions (state categories are not
  used much though).

Other updates:
* Added more commands to the batch processor
* Many bug-fixes.

/Griatch

src/commands/parents.py

@@ -2,10 +2,14 @@
 Contains commands for managing script parents.
 """
 from src import scripthandler
+from src import defines_global
 from src.cmdtable import GLOBAL_CMD_TABLE
       
 def cmd_scriptcache(command):
-    """Usage
+    """
+    @scriptcache 
+
+    Usage
       @scriptcache
 
     Shows the contents of the script cache.
@@ -20,12 +24,21 @@ def cmd_scriptcache(command):
     retval += "%d cached parents" % len(cache_dict)
     command.source_object.emit_to(retval)
 GLOBAL_CMD_TABLE.add_command("@scriptcache", cmd_scriptcache,
-                             priv_tuple=("genperms.builder"),
-                             auto_help=True,staff_help=True)
+                             priv_tuple=("genperms.builder",), help_category="Admin")
 
 def cmd_parent(command):
     """
-    Sets an object's script parent.
+    @parent - set script parent
+
+    Usage:
+      @parent <object> = <parent>
+
+    Example:
+      @parent button = examples.red_button
+      
+    Sets an object's script parent. The parent must be identified
+    by its location using dot-notation pointing to the script
+    parent module.
     """
     source_object = command.source_object
 
@@ -80,5 +93,5 @@ def cmd_parent(command):
                               (target_obj,current_parent)) 
         
 GLOBAL_CMD_TABLE.add_command("@parent", cmd_parent,
-                             priv_tuple=("genperms.builder"))
+                             priv_tuple=("genperms.builder",), help_category="Building" )