Make ElasticSearch data path configurable.
Add pending-evolutions.sql.
Support 'CloseTree'; add DW1_POSTS.TREE_CLOSED_AT column.
Add comment.
Use Play 2.1.3 (well, change out commented dependencies only actually).
Use 5 ElasticSearch shards not 100

Easier to troubleshoot only 5 shards.
Support fastStartSkipSearch, for quick startup without ElasticSearch

For development only.
Save and load the PinPostAtPosition action; add evolutions 3.sql.
Fix test suite compilation error.
Rename PermsOnPageQuery to PermsOnPage.
Grant `pinReplies` permission if `isPageAuthor`.
Fix loadRecentActionExcerpts bug

Load recent actions by POST_ID = POST_ID, not by a.RELPA = actionIds.PAID,
because RELPA is often Null.

Skip check that TYPE <> 'Post' because replies have different POST_ID:s.