slapos_jio_ui_test: wait for content loaded to delete project

slapos_jio_ui_test: wait for page to be loaded

  Accept a list of Software types for limit the user's choice for software type, keeping the actual value (at least) even if they aren't part of the list (in case of existing instances).

  The list DO not extend the software type options provided by the software release (software.cfg.json) only act as a filter.

  As long the software type is passed, the restricted mode is enabled, since it is the only possible outcome.

  This simplifies the parameters passed to the editor.

  This is equivalent to editable equal to false when render the gadget field.

  Instance tree cannot change software type, so make the software type selection field as read only, improving users experience.
  Remove duplicated Software type on instance tree view, since it is already present on Parameter editor.

See merge request nexedi/slapos.core!452

See merge request nexedi/slapos.core!453

  This is very old form, not used for years (not even working).

  Those business templates will always be present on tags in git if we still need to access this old code

   This is old legacy code, not used anymore.

See merge request nexedi/slapos.core!451

See merge request nexedi/slapos.core!450

See merge request !448

See merge request !449

  Use the same term as used on slapos_jio

   RSS for Critical was a duplication

    Move closed tickets to a different tab, only "To Reply/Track" is placed on the main list.

  Factorize the tests for make less repetitive on the skin lists