change logic of some services
implement image service, change account service due to recent changes in interface
register ImageService in the container, add mapping of Unit and IndexModel, minor fixes
changes at EstatesController, add extension to UserDetail entity
add resources for list of estates/units view and for a single estate/unit in a list
add files for the page with a list of units/estates: model, view, action, partial that represents a single entry in list of units, styles and scripts