Merge branch 'feature/improve-tracer-example-filenames' into 'master'

[examples][tracer] Choose filenames using a naming scheme

See merge request !1947

examples/1ptracer/.doc_config

 {
     "README.md" : [
-        "doc/intro.md"
+        "doc/_intro.md"
     ],
 
-    "doc/1pmodel.md" : [
-        "doc/1pintro.md",
+    "doc/1p.md" : [
+        "doc/1p_intro.md",
         "properties_1p.hh",
         "problem_1p.hh",
         "spatialparams_1p.hh"
     ],
 
-    "doc/tracermodel.md" : [
-        "doc/tracerintro.md",
+    "doc/tracer.md" : [
+        "doc/tracer_intro.md",
         "properties_tracer.hh",
         "problem_tracer.hh",
         "spatialparams_tracer.hh"
     ],
 
     "doc/main.md" : [
-        "doc/mainintro.md",
+        "doc/main_intro.md",
         "main.cc"
     ],
 
     "navigation" : {
         "mainpage" : "README.md",
         "subpages" : [
-            "doc/1pmodel.md",
-            "doc/tracermodel.md",
+            "doc/1p.md",
+            "doc/tracer.md",
             "doc/main.md"
         ],
         "subtitles" : [

examples/1ptracer/README.md

@@ -117,13 +117,13 @@ simulations are solved sequentially in the main file (`main.cc`).
 
 ## Part 1: Single-phase flow simulation setup
 
-| [:arrow_right: Click to continue with part 1 of the documentation](doc/1pmodel.md) |
+| [:arrow_right: Click to continue with part 1 of the documentation](doc/1p.md) |
 |---:|
 
 
 ## Part 2: Tracer transport simulation setup
 
-| [:arrow_right: Click to continue with part 2 of the documentation](doc/tracermodel.md) |
+| [:arrow_right: Click to continue with part 2 of the documentation](doc/tracer.md) |
 |---:|
 
 

examples/1ptracer/doc/1pmodel.md → examples/1ptracer/doc/1p.md

 <!-- Important: This file has been automatically generated by generate_example_docs.py. Do not edit this file directly! -->
 
 
-| [:arrow_left: Back to the main documentation](../README.md) | [:arrow_right: Continue with part 2](tracermodel.md) |
+| [:arrow_left: Back to the main documentation](../README.md) | [:arrow_right: Continue with part 2](tracer.md) |
 |---|---:|
 
 # Part 1: Implementation of the single-phase flow simulation setup
@@ -461,6 +461,6 @@ private:
 </details>
 
 
-| [:arrow_left: Back to the main documentation](../README.md) | [:arrow_right: Continue with part 2](tracermodel.md) |
+| [:arrow_left: Back to the main documentation](../README.md) | [:arrow_right: Continue with part 2](tracer.md) |
 |---|---:|
 

examples/1ptracer/doc/main.md

 <!-- Important: This file has been automatically generated by generate_example_docs.py. Do not edit this file directly! -->
 
 
-| [:arrow_left: Back to the main documentation](../README.md) | [:arrow_left: Go back to part 2](tracermodel.md) |
+| [:arrow_left: Back to the main documentation](../README.md) | [:arrow_left: Go back to part 2](tracer.md) |
 |---|---:|
 
 # Part 3: Main program flow
@@ -425,6 +425,6 @@ catch (...)
 </details>
 
 
-| [:arrow_left: Back to the main documentation](../README.md) | [:arrow_left: Go back to part 2](tracermodel.md) |
+| [:arrow_left: Back to the main documentation](../README.md) | [:arrow_left: Go back to part 2](tracer.md) |
 |---|---:|
 

examples/1ptracer/doc/tracermodel.md → examples/1ptracer/doc/tracer.md

 <!-- Important: This file has been automatically generated by generate_example_docs.py. Do not edit this file directly! -->
 
 
-| [:arrow_left: Back to the main documentation](../README.md) | [:arrow_left: Go back to part 1](1pmodel.md) | [:arrow_right: Continue with part 3](main.md) |
+| [:arrow_left: Back to the main documentation](../README.md) | [:arrow_left: Go back to part 1](1p.md) | [:arrow_right: Continue with part 3](main.md) |
 |---|---|---:|
 
 # Part 2: Implementation of the tracer transport simulation setup
@@ -521,6 +521,6 @@ private:
 </details>
 
 
-| [:arrow_left: Back to the main documentation](../README.md) | [:arrow_left: Go back to part 1](1pmodel.md) | [:arrow_right: Continue with part 3](main.md) |
+| [:arrow_left: Back to the main documentation](../README.md) | [:arrow_left: Go back to part 1](1p.md) | [:arrow_right: Continue with part 3](main.md) |
 |---|---|---:|