Use CacheManager instead of ConnectionPool for Caches

[Former user]

The current implementation uses the connection pool to get data from the cf_ tables. If your cf_ tables are persistet to a Redis Server, the whole extension will throw exceptions because of missing cf_* tables in the database.

Please use the cacheManager framework to get your cache information instead of using queries with doctrine.

[Armin Vieweg]

Hi thanks for reporting. Actually I am checking the table existence in the info module and you should see a message instead of an exceptions. I'll check this.

[Armin Vieweg]

It's a feature request, not a bug.