minor changes
fixed support for multidimensional array in select boxes
updated jquery placeholder library
refactoring of base forms & user form
added Bootstrap::registerExtensions()
updated MailPanel
added ErrorMessages class
added MailFactory to config + cosmetics in config
fixed NavigationControl always matching homepage url
refactoring of AdminModule models (file, image)
updated Analytics snippet
removed Datagrid
added MailMessage
implemented sortable grido /MyGrid/
hide label control in forms when using placeholders as label
minor refactoring