Item2258: added template support. Item2450: Fix subscription to subweb topics. Item11015: Improve docs. Item8095: Analyse and fix load failures. Item11543: Add unit tests. Item10045: Support non-ascii topic names. Item11595: Use REST handler for post with strikeone.

git-svn-id: http://svn.foswiki.org/trunk/SubscribePlugin@16610 0b4bb1d4-4e5a-0410-9cc4-b2b747904278