Merge pull request #1527 from rodekruis/feat.email-mjml

feat: Switch to mjml to handle email templates

Author: jannisvisser

interfaces/IBF-dashboard/src/assets/i18n/en.json

@@ -178,7 +178,7 @@
       },
       "alertLevel": {
         "expected": "expected on",
-        "expected-trigger": "expected to reach threshold on",
+        "expected-trigger": "expected to trigger on",
         "exposed-areas": "Exposed {{adminAreaLabelPlural}}:",
         "no-data": "No population data available"
       }