Dialog code was move to ProgressDialog.html

It will be injected when dialog is shown
Few changes

- date format change for temporal installation files
- result to do_install_output is now a DataFile object
- do_install_output() in progress...
- Options uses 'id' as required field, no other options are allowed for
installing packages (e.g. it is not allowed to install all packages that
matchs an operating system, they should exactly match the 'id')
-
log line added
Major changes

- it is necessary to create a Machine object to poll the installation
file
- result in do_poll_output() can be a DataFile object or an array of
these
twitter bootstrap and datatables files