Fix issue w/ "throw_script"

Require either the thrown weapon and targets to be specified or require
both values available in the config-file
Create additional ratha movement scripts

From the "Town Green":

* To and from the "First Tier Bank"
* To and from "Krriktk's Forge"
* To and from "Raven's Mask"
* To and from the "Third Tier Bank"
* .. and related test stubs