add some more docstrings for plugins
Remove now unneeded attempts at avoid data reloads.

Add some notes about the conduit/method instaniations
and calls in run(). Particular where we could catch
and raise more useful errors.
remove more unused checks for data reload

doc string updates
Add PluginInfo class wrapping plugin and plugin conf

Add some getters for plugin info to PluginManager
Add 'name' attribute to base plugin class.
Merge branch 'alikins/plugins' into awood/plugins
stylish cleanups