[form] fix #719285, due to multiple calls to restore_previous_post, by proper refactorings * move __init__ code from FieldsForm to Form. Must behaviour here should actually be in the Form base class * avoid buggy duplicated call to restore_previous_post * move some code that was in the form renderer to the form'__init__ method (__redirectpath & __form_id hidden input handling)) * 'formvid' should now be specified on form selection, not on form rendering

/***************************************/
/* Manage view (views/startup.py)      */
/***************************************/

table.startup {
  width: 100%;
}

table.startup td {
  padding: 0.1em 0.2em;
}

table.startup td.addcol {
  text-align: right;
  width: 0.5em;
}

table.startup th{
  padding-top: 3px;
  padding-bottom: 3px;
  text-align: left;
}