Fixed various minor bugs

Depends.lua - Added better support for dependent jobs, missing now argument to support this case.  This code should be reviewed to be sure the intent is still correct.
Peek.lua - Fixed assertions with incorrect argument mappings
Priority.lua - If queue was not found, incorrectly casting a boolean queue value and appending it with '' caused exception.
Recur.lua - Wrapped the null JSON object in single quotes to properly expose assertion message to client.
Tag.lua - "Get" changed the count to accurately return the number of items requested.  "Top" modified to return the entire set of items, up to 'count' number of items.