Rock Stalkers (Silithus) set to Elite

This sets the Rock Stalkers in Silithus to Elite (Rank)
They did not have their elite status removed until patch 2.3
Missing US Text for High Executor Darthalia fix

This fixes the issue where High Executor Darthalia's (Tarren Mill,
Hillsbrad Foothills) greeting is "Missing US Text"

The text used is the same as used on the TrueWow private server. No
other sources could be found, other than private servers
Correction made to SQL script

Database name removed from the script.
Merge pull request #165 from Chuck5ta/Rel20

Silithus Rock Stalkers / High Executor Darthalia fixes