BETA: Updating '''Varka Silenos Barracks''' and '''Ketra Orc Outpost'''

* AI:
 * Added !VarkaKetra AI
 * Updated Varka Silenos Support
 * Updated Ketra Orc Support
* Quests:
 * Alliance with Ketra Orcs (605)
 * Battle against Varka Silenos (606)
 * Prove Your Courage! (Ketra) (607)
 * Slay the Enemy Commander! (Ketra) (608)
 * Magical Power of Water - Part 1 (609)
 * Magical Power of Water - Part 2 (610)
 * Alliance with Varka Silenos (611)
 * Battle against Ketra Orcs (612)
 * Prove Your Courage! (Varka) (613)
 * Slay the Enemy Commander! (Varka) (614)
 * Magical Power of Fire - Part 1 (615)
 * Magical Power of Fire - Part 2 (616)
* SQL:
 * Updated some teleports
 * Removing {{{varka_ketra_ally}}} column from characters.sql

Patch by: malyelfik, joxit

'''Note:''' Requires Core Update