tool development slides improvements

[bgruening]

• repeat slides -> enumerate is not used
• tests slide needs to use sim_size for pngs
• hands-on steps for planemo test, include planemo lint

[lecorguille]

• debug a wrapper with the good conda environment (without have to relaunch x time planemo) using

planemo --no_cleanup
cd /tmp/tmpQ2UkMa/job_working_directory/000/9/working
../tool_script.sh

[nsoranzo]

tests slide needs to use sim_size for pngs

For the test copy-pasted from graphlan wrapper:

<output name="png_output_image" file="png_image.png" />

actually works fine.

[bgruening]

What do you think about dropping the explanation of the parameters from the slides. It takes a long time and parts of it is explained in the planemo docs and are also easy to grasp. It took a long time during the training imho.

[nsoranzo]

We can shorten it, but I'd keep some.

[lecorguille]

• hands-on steps for planemo test, include planemo lint
  Done within the Planemo tutorial