Resolve "Ajout de la passe à rugosité de fond"

Closes #657 (closed)

src/locale/messages.en.json

@@ -83,6 +83,8 @@
     "ERROR_STRUCTURE_ZDV_PAS_CALCULABLE": "Parameter \"Crest elevation\" cannot be calculated with this discharge law",
     "ERROR_STRUCTURE_Z_EGAUX_Q_NON_NUL": "Upstream and downstream elevations are equal but flow is not null",
     "ERROR_ELEVATION_Z1_LOWER_THAN_ZF1": "than the upstream bottom elevation of the ramp",
+    "ERROR_COEF_DEBIT_NULL": "Calculation is impossible when discharge coefficient is null",
+    "ERROR_D65_NULL": "Calculation is impossible when d65 is null",
     "INFO_CALCULATOR_CALC_NAME": "Calculator name",
     "INFO_CALCULATOR_CALCULER": "Compute",
     "INFO_CALCULATOR_CLONE": "Duplicate",