Add DBCP as a dependency (should fix database connection) #265
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After updating Tomcat, I noticed that downloads were no longer being recorded in the database. I suspect that this is caused by the upgrade having removed the DBCP (database connection pool) library. This was found in logging when Tomcat was starting up:
Instead of adding the library to Tomcat, it is being bundled in this (root) application, which hopefully works well enough (and no longer depends on us having a specific Tomcat configuration when upgrading). The database driver is already being included in the same way, after all.