[DOCS] organize a bit the repository plugins

(cherry picked from commit 88e1c20c4581885db7e5e65edf7eb3629c2d31ca)
Add fuzzy/slop support to `simple_query_string`

Ports the change from https://issues.apache.org/jira/browse/LUCENE-5410
Add Marvel and Paramedic to config file
add redis transport plugin