Thanks to Théophile HECTOR DUCHASSIN from Suez

Merge branch '673-rugofond-ajout-du-strickler-equivalent-dans-les-resultats-complementaires' into 'devel'

Resolve "RugoFond: ajout du strickler equivalent dans les résultats complémentaires"

Closes #673

See merge request !267

Refs #673

Resolve "Solveur: Les select d'une session chargée ne s'initialise pas"

Closes #669 and #668

See merge request !265

Refs #668

Refs #                 668

Refs #668

Refs #668

Refs #669

Refs #668

Move methodes_numeriques/ pages to theorie/methodes_numeriques/

Fix #653

Preparing release 4.19.0

Resolve "Cassiopée doesn't work for languages other than French and English"

Closes #667

See merge request !264

Refs #667

Refs #667

Mise à jour vers Angular 15

Closes #659

See merge request !256

# Conflicts:
#   e2e/link-to-deleted-module2.e2e-spec.ts

Refs #659

Refs #659

Refs #659

Merge branch '666-test-e2e-error-error-in-nghyd-calculate-with-linked-parameters-bug-nghyd-329-unexpected-err-in-2' into 'devel'

Resolve "Test E2E Error: Error in "ngHyd − calculate with linked parameters  − bug #329 : unexpected ERR in results table"

Closes #666

See merge request !263

Merge branch '665-validity-of-field-is-not-transmetted-to-calculate-button-every-time-2' into 'devel'

Resolve "Validity of field is not transmetted to Calculate button every time"

Closes #665

See merge request !262

Refs #666

Refs #666

Refs #665

Refs #665

Resolve "Ajout de la passe à rugosité de fond: cas d'un radier incliné"

Closes #664 and #658

See merge request !255

Refs #658

Refs #658

Refs #658

Refs #658

Refs #658

Refs #658

Refs #658

Refs #658

Refs #664