create new splunk session before each search

splunk sessions apparently time out, so for now create a new one before
each seearch.

This should instead try to cache the session, but retry after logging in
if the search raises an exception
I forget...

I think this avoids re-trying to initialize plugins that are disabled or
broken
fix template finding when cloned plugins override name
vump version
fix splunk helper
bump version
Merge pull request #1 from JustinAzoff/master

pull up to justin's most recent commits