Multiple languages ​​for the narrative web and optional other additions (#1051)

* Navweb: multi-language configuration.
* Navweb: multi-language exec, navigation menu, css
* Navweb: make css responsive for multi-language
* Language menu must work with a non english lang
* Avoid to copy common files for each language
* Use cms and archive in multi-languages
* Add the default index.
* Some cleanup.
* Images: performances improvement with image_size

Need to use the magic library (python-magic, python3-magic, ...)
If this library don't exist on the system, continue to use the Gdk method.

- force archive if we use CMS
- remove some unused code
- some strings are not translatable
- stay on the same page when you change language
- add image in the ancestor tree for all levels and not for the first 5

performances:
- copy images and thumbs only for the first language
* Some minor corrections and performances test
* Update comments for methods and functions
* Narweb: add show tags option
* Try to translate tags and suppress the colon (:)
* Narweb: integrate of webcal for multilang use
For each lang, we use the related calendar if it exists
* Death string only translated for the locale lang
* set correct url for extrapage.
* Add optional toggle for html sections
* show birth and death date if close option selected
* No background in references section with Mainz css
* Remove photo from list incompatible with multilang
* Add the first photo to the place page marker
* Add associated persons.
* Solves 'undefined' in map popup.
* Calendar: Set the background for the current day
* Thumbnail align problem with long description.
* Set the contact page date to the note date
* Add a scroll to top button.
* Increase the nb of generations since we can scroll
* Difficult to see the "go to top" icon.
* Better management for the toggle switch

data/css/narrative-maps.css

@@ -117,7 +117,15 @@ div#FamilyMapDetail div#references table.infolist tbody tr td.ColumnPlace {
   font: bold 0.9em sans-serif;
   max-height: 200px;
   overflow-y: auto;
-  padding: 0 0.5em 15px 0.5em;
+  padding: 5px 0.5em 5px 0.5em;
+}
+#map_canvas .thumbnail {
+  padding: 5px 5px;
+  text-align: center;
+}
+#map_canvas img {
+  max-height: 300px;
+  max-width: 400px;
 }
 #map_canvas .ol-popup-content a {
   color: #111;