MBS-4756/MBS-5918: transclusion -> DB, main UI fixes. tests and migration script needed still
MBS-4756/MBS-5918: update tests to reflect new wikidocs system in DB
MBS-4756/MBS-5918: create a migration script reading in the old disk-based transclusion table and inserting into the DB
MBS-4756/MBS-5918: corrections to index migration code recommended by ocharles, plus documentation of race condition
MBS-4756/MBS-5918: add transclusion table migration to upgrade.sh
MBS-4756/MBS-5918: use ocharles' suggestion for loading index from DB cleaner
Merge branch 'mbs-4756-ui-5918' into schema-changes-2013-05-15

* mbs-4756-ui-5918:
  MBS-4756/MBS-5918: use ocharles' suggestion for loading index from DB cleaner
  MBS-4756/MBS-5918: add transclusion table migration to upgrade.sh
  MBS-4756/MBS-5918: corrections to index migration code recommended by ocharles, plus documentation of race condition
  MBS-4756/MBS-5918: create a migration script reading in the old disk-based transclusion table and inserting into the DB
  MBS-4756/MBS-5918: update tests to reflect new wikidocs system in DB
  MBS-4756/MBS-5918: transclusion -> DB, main UI fixes. tests and migration script needed still