Merge pull request #602 in ZP/z-push from feature/ZP-1284-add-note-backend-operating-against to develop

* commit 'bdb83f2b':
  ZP-1284 Fix last few missed tabs. Released under the Affero GNU General Public License (AGPL) version 3.
  ZP-1284 Commit for cleanups - no functional changes. Released under the Affero GNU General Public License (AGPL) version 3.
  ZP-1284 Composer update. Released under the Affero GNU General Public License (AGPL) version 3.
  ZP-1284 Change tabs to spaces. Released under the Affero GNU General Public License (AGPL) version 3.
  ZP-1284 Fix problem with init on sink init with cache; we need to call Stat there and populate the structure.  Released under the Affero GNU General Public License (AGPL) version 3.
  ZP-1284 More variable cleanup. Released under the Affero GNU General Public License (AGPL) version 3.
  ZP-1284 Fix multiple variable issues with Changessink code.  Released under the Affero GNU General Public License (AGPL) version 3.
  ZP-1284 Add ChangesSink code to the back end; style change on a few queries. Released under the Affero GNU General Public License (AGPL) version 3.
  ZP-1284 Fix missing "not deleted" in note lookup conditions. Released under the Affero GNU General Public License (AGPL) version 3.
  ZP-1284 Revert config file to "as-shipped." Released under the Affero GNU General Public License (AGPL) version 3.
  ZP-1284 Stickynote backend initial code upload.