Neither mongo nor mysql allow '.' in database names.
Closes #427: Hiding enable/disable button for plugins in $config->alwaysplugins[]
Merge pull request #428 from mapkyca/alwaysplugins

Closes #427: Hiding enable/disable button for plugins in $config->always...
Refs #426 comments: forces session name to hostname in multitenant installs
Fully qualified URLs for touch icons
Merge pull request #426 from mapkyca/multitenant

Neither mongo nor mysql allow '.' in database names.
Minor tweak to multitenant database name config
Style fix