Moved warp sign code into the corresponding class
Fixed warp signs for now.
Removed Hopper from checked blocks as it is solid
Attempt to fix not working SQlite due to database lock - untested
Removed connection pool in favor of synchronized methods
This reverts almost everything done regarding database connections in
the last weeks. While a connection pool is defiantly faster and can
improved MySQL performance on large servers, it also comes with a couple
of risks that needs more work on our side., which is (at least) to much
for the next release.