Extract additional dashboard strings for translation

[bmtcril]

Currently we are missing some strings from Dashboard translations:

• chart.meta.sliceNameOverride

We should be able to test this by running make extract_translations to debug and make sure the strings get picked up correctly.

[Ian2012]

I don't think "position.*.meta.code" would work as that's not rendered. We should add that to other yaml and load it like we do for dataset_strings

[bmtcril]

Removed the help text from this ticket, it'll be a whole other thing

[Ian2012]

The following things would also need translation:

• Charts.params.groupby.label
• Dashboards.position.*.meta.sliceNameOverride

This would require:

• allowing the extracting script to fetch those values
• once those are in place, inject it on the translated assets