[client][Dashboard] Tune the look and feel.
[server][DBClientHatohol] Adjust an indent.
[server][DBClientHatohol] Use a defined type instead of a native type.
[server][DBClientHatohol] Adjust indent.
[server][DBClientHatohol] Add 'const' for a constant definition.
[server][DBClientHatohol] Adjust indent.
[server][DBClientHatohol] Make table names public so that other class can use them.
[server][DBClientHatohol] Split off code for HostResourceQueryOption, because I'll extend it to perform a query operation gracefully.