Revert "Disable full-text on production for now"

This reverts commit 71b20de1cc3df95146249ea50e177d2c284a6968.
Revert "Only try to clear fulltext on testing site for now"

This reverts commit a64d703f1d9560f8deed899d280902d25d33ba48.
Revert "Item full-text content support, via ElasticSearch"

This reverts commit 8f7fdfdac2d1fc729ad43f9670206ab83db32801.
Revert "Add Zotero_Notifier, with notifications sent to Amazon SQS"

This reverts commit 9f1b6312458e008ee78302aaa2285158876c8f1e.