[server][DBClientUser] Add an option that enables a caller to choose a transaction or not.
[server][DBClientConfig] Add a check of the privilege on an update of server information.
[client][ajax_triggers] Fix a problem that causes a JS error when trigger data that was generated by the deleted server.
[server][DBClientConfig] Add a check of privilege for a deletion of a monitoring server.
[client][events_view] Fix a problem that causes a JS error when the server name isn't included.
[client][events_view] Fix a problem that doesn't list host names in the header combo box.
Revert "[client][events_view] Fix a problem that doesn't list host names in the header combo box."

This reverts commit 7198c5cb3b08265eb44e0b28d7b1c6cf10e3c4d8.
[client] Disble a list box for hosts if the server is not selected.
[client][overview_items] Add a missing initialization of "Host" filter
[client][triggers_ajax] Clean up the code for missing servers with the library function.
[client][overview_triggers_ajax]  Fix a problem that causes a JS error when the server name isn't included.
[client] Make the status button an error when a JS exception is not handled.
[client] Add sample configuration for mod_wsgi
[client][events_view] Use bootstrap style.
[client] Add dist files
[client] Simply apache config
[client] Simply apache config
Merge branch 'master' into ready-release-13.12