Multiple Admin Interface fixes and some others.

Misc:
- Fixed hadolint workflow, new git cli needs some extra arguments.
- Add ignore paths to all specific on triggers.
- Updated hadolint version.
- Made SMTP_DEBUG read-only, since it can't be changed at runtime.

Admin:
- Migrated from Bootstrap v4 to v5
- Updated jquery to v3.6.0
- Updated Datatables
- Made Javascript strict
- Added a way to show which ENV Vars are overridden.
- Changed the way to provide data for handlebars.
- Fixed date/time check.
- Made support string use details and summary feature of markdown/github.

.github/workflows/build.yml

@@ -2,6 +2,19 @@ name: Build
 
 on:
   push:
+    paths-ignore:
+      - "*.md"
+      - "*.txt"
+      - ".dockerignore"
+      - ".env.template"
+      - ".gitattributes"
+      - ".gitignore"
+      - "azure-pipelines.yml"
+      - "docker/**"
+      - "hooks/**"
+      - "tools/**"
+      - ".github/FUNDING.yml"
+      - ".github/ISSUE_TEMPLATE/**"
   pull_request:
     # Ignore when there are only changes done too one of these paths
     paths-ignore:
@@ -39,13 +52,13 @@ jobs:
             features: [sqlite,mysql,postgresql] # Remember to update the `cargo test` to match the amount of features
             channel: nightly
             os: ubuntu-18.04
-            ext:
+            ext: ""
           # - target-triple: x86_64-unknown-linux-gnu
           #   host-triple: x86_64-unknown-linux-gnu
           #   features: "sqlite,mysql,postgresql"
           #   channel: stable
           #   os: ubuntu-18.04
-          #   ext:
+          #   ext: ""
 
     name: Building ${{ matrix.channel }}-${{ matrix.target-triple }}
     runs-on: ${{ matrix.os }}