* For #3088: filter incomplete locales in release builds

* For 3088: update locale filtering to not error on nightly builds

This reverts commit 93122b61.

* For #3088: add translation pruning Py scripts from Focus

The only change made was updating "Focus/Klar" to "Fenix"

* For 3088: call translation pruning scripts during release builds

* For 3088: fix filter-release-translations.py

Moving it into Fenix introduced one additional layer of nesting, which was not accounted for in a relative path.  🤦

* For 3088: comment about the risks of modifying source

* For 3088: updated locales.py to read from l10n.toml

Also removed some previously unused properties from locales.py

* For 3088: added error handling to script in locales.py

* For 3088: updated locale parser per review comments

It was fixed in [1], but I regressed it when I resolved conflicts in [2]

[1] https://github.com/mozilla-mobile/fenix/commit/9729fd494e524cea5f1ec979c7ae8d40dae4e596\#diff-3a2aaafc93fc8bb53e2029001aa236aeL98
[2] https://github.com/mozilla-mobile/fenix/commit/060e915d2bcb913e1e837289b24ff4895455b1cf\#diff-3a2aaafc93fc8bb53e2029001aa236aeR95

* Bug 1580778 - Put back versionName to releases

* Bug 1580778 - Put quote escaping