Index: gc_lang/fr/build.py
==================================================================
--- gc_lang/fr/build.py
+++ gc_lang/fr/build.py
@@ -11,10 +11,11 @@
 import helpers
 
 
 def build (sLang, dVars):
     "complementary build launched from make.py"
+    dVars['webextOptionsHTML'] = _createOptionsForWebExtension(dVars)
     createWebExtension(sLang, dVars)
     convertWebExtensionForChrome(sLang, dVars)
     createMailExtension(sLang, dVars)
     createNodeJSPackage(sLang)
 
@@ -23,11 +24,10 @@
     "create Web-extension"
     print("> Building WebExtension for Firefox")
     helpers.createCleanFolder("_build/webext/"+sLang)
     dir_util.copy_tree("gc_lang/"+sLang+"/webext/", "_build/webext/"+sLang)
     dir_util.copy_tree("grammalecte-js", "_build/webext/"+sLang+"/grammalecte")
-    dVars['webextOptionsHTML'] = _createOptionsForWebExtension(dVars)
     helpers.copyAndFileTemplate("_build/webext/"+sLang+"/manifest.json", "_build/webext/"+sLang+"/manifest.json", dVars)
     helpers.copyAndFileTemplate("_build/webext/"+sLang+"/panel/main.html", "_build/webext/"+sLang+"/panel/main.html", dVars)
     with helpers.CD("_build/webext/"+sLang):
         os.system("web-ext build")
     # Copy Firefox zip extension to _build
@@ -72,10 +72,16 @@
     _copyGrammalecteJSPackageInZipFile(hZip, sLang)
     for spf in ["LICENSE.txt", "LICENSE.fr.txt"]:
         hZip.write(spf)
     dVars = _createOptionsForThunderbird(dVars)
     helpers.addFolderToZipAndFileFile(hZip, "gc_lang/"+sLang+"/mailext", "", dVars, True)
+    helpers.addFolderToZipAndFileFile(hZip, "gc_lang/"+sLang+"/webext/3rd", "3rd", dVars, True)
+    helpers.addFolderToZipAndFileFile(hZip, "gc_lang/"+sLang+"/webext/_locales", "_locales", dVars, True)
+    helpers.addFolderToZipAndFileFile(hZip, "gc_lang/"+sLang+"/webext/content_scripts", "content_scripts", dVars, True)
+    helpers.addFolderToZipAndFileFile(hZip, "gc_lang/"+sLang+"/webext/fonts", "fonts", dVars, True)
+    helpers.addFolderToZipAndFileFile(hZip, "gc_lang/"+sLang+"/webext/img", "img", dVars, True)
+    helpers.addFolderToZipAndFileFile(hZip, "gc_lang/"+sLang+"/webext/panel", "panel", dVars, True)
     hZip.close()
     #spExtension = dVars['win_tb_debug_extension_path']  if platform.system() == "Windows"  else dVars['linux_tb_debug_extension_path']
     #if os.path.isdir(spExtension):
     #    file_util.copy_file(spfZip, spExtension + "/" + dVars['tb_identifier']+ ".xpi")  # Filename for TB is just <identifier.xpi>
     #    print(f"TB extension copied in <{spExtension}>")

Index: gc_lang/fr/mailext/manifest.json
==================================================================
--- gc_lang/fr/mailext/manifest.json
+++ gc_lang/fr/mailext/manifest.json
@@ -1,19 +1,48 @@
 {
   "manifest_version": 2,
   "applications": {
     "gecko": {
       "id": "${tb_identifier}",
-      "strict_min_version": "68.0a1"
+      "strict_min_version": "78.0a1"
     }
   },
   "name": "${tb_name}",
+  "short_name": "${tb_name}",
   "description": "${description}",
   "version": "${version}",
 
   "author": "${author}",
   "homepage_url": "${link}",
 
+  "default_locale": "fr",
+
+  "icons": { "16": "img/logo-16.png",
+             "32": "img/logo-32.png",
+             "48": "img/logo-48.png",
+             "64": "img/logo-64.png",
+             "80": "img/logo-80.png",
+             "96": "img/logo-96.png" },
+
+  "browser_action": {
+    "default_icon": "img/logo-32.png",
+    "default_popup": "panel/main.html",
+    "default_title": "Grammalecte [fr]",
+    "browser_style": false
+  },
 
+  "compose_action": {
+    "default_icon": "img/logo-32.png",
+    "default_area": "maintoolbar",
+    "default_popup": "panel/main.html",
+    "default_title": "Analyser",
+    "browser_style": false
+  },
 
+  "background": {
+    "scripts": [
+      "grammalecte/graphspell/helpers.js",
+      "background.js"
+    ]
+  }
 
 }

Index: helpers.py
==================================================================
--- helpers.py
+++ helpers.py
@@ -130,9 +130,9 @@
         spfDst = (spDst + "/" + sf).strip("/ ")
         if os.path.isdir(spfSrc):
             if bRecursive:
                 addFolderToZipAndFileFile(hZip, spfSrc, spfDst, dVars, bRecursive)
         else:
-            if spfSrc.endswith((".py", ".js", ".json", ".css", ".xcu", ".xul", ".rdf", ".dtd", ".properties")):
+            if spfSrc.endswith((".py", ".js", ".json", ".html", ".htm", ".css", ".xcu", ".xul", ".rdf", ".dtd", ".properties")):
                 hZip.writestr(spfDst, fileFile(spfSrc, dVars))
             else:
                 hZip.write(spfSrc, spfDst)