Change validator for ensemble smoother

Use error messages from the validators.

Make es_mda run correctly from cli

Remove Iterated Ensemble Smoother option from CLI

This is deprecated functionality and have known bugs, thus we do
not add support for it from the CLI

Remove libres PlotConfig dependency

- Updating tests to work without enkf plot_config
- res plotConfig made default
- libres version bumped to 2.6.a2

Clone tag only

There were merge conflict issues appearing with cloning first and then
checking out (although it shouldn't). Cloning tag only might solve it.
And anyways that should really be the preferred way, it's faster and
downloads only the part we're interested in.

Clone tag only

There were merge conflict issues appearing with cloning first and then
checking out (although it shouldn't). Cloning tag only might solve it.
And anyways that should really be the preferred way, it's faster and
downloads only the part we're interested in.

Set version to 2.5.2

Prevent run dialog from closing on simulation failure

Add border color indication in description of FM monitoring

Add border color indication in description of FM monitoring

Fix status update