Tech:Server admin log

This server admin log is for actions which are not reflected in our Ansible playbook.

July 31

 * 22:48 Kudu (talk) Changed MySQL parameters: table_open_cache=2500, thread_cache_size=48. Kudu (talk) 22:48, 31 July 2013 (UTC)
 * 22:37 Kudu (talk) Change MySQL parameters: long_query_time=1, query_cache_size=32M, slow_query_log=1, table_open_cache=400, thread_cache_size=4. Those are preliminary settings, they should be adjusted more carefully eventually.