fix #640: [FR] Ignore 'laé' template, support 'obsolète' and 'Braille'

[lasconic]

• Fixes [FR] Ignore the 'laé' template #640
• Tests added/updated.
• ./check.sh run and eventual issues fixed.
• Updated CONTRIBUTORS.md, if not already done in the past.

[sourcery-ai]

Sourcery Code Quality Report

Merging this PR leaves code quality unchanged.

Quality metrics	Before	After	Change
Complexity	14.50 🙂	14.50 🙂	0.00
Method Length	380.00 ⛔	381.67 ⛔	1.67 👎
Working memory	131.02 ⛔	131.32 ⛔	0.30 👎
Quality	32.55% 😞	32.55% 😞	0.00%

Other metrics	Before	After	Change
Lines	754	757	3

Changed files	Quality Before	Quality After	Quality Change
wikidict/lang/fr/init.py	32.55% 😞	32.55% 😞	0.00%

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation
wikidict/lang/fr/init.py	last_template_handler	22 😞	210 ⛔	18 ⛔	27.55% 😞	Refactor to reduce nesting. Try splitting into smaller methods. Extract out complex expressions

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