Add detection for webdev (#2351)

Webdev is a infamous french software to develop websites known for its
[sexist](http://blog.clement.delafargue.name/posts/2014-05-01-youve-convinced-me-boss-ill-work-with-windev-and-pc-soft.html)
[as](https://www.theregister.co.uk/2014/05/02/french_software_developers_are_all_beautiful_women/)
[fuck](http://www.mhfreq.org/2013/12/les-pubs-windev/)
[ads](https://www.windev.com/newfeatures23/ebook/index.html) and for using
French keywords everywhere.

It's [kinda popular](https://www.pcsoft.fr/webdev/listesite.htm) and used for
some big corporate website and ERP.

src/apps.json

@@ -10683,6 +10683,20 @@
       "script": "web2py\\.js",
       "website": "http://web2py.com"
     },
+    "Webdev": {
+      "cats": [
+        20
+      ],
+      "headers": {
+        "WebDevSrc": ""
+			},
+      "icon": "webdev.png",
+			"html": "<!-- [a-zA-Z0-9_]+ [\\d/]+ [\\d:]+ WebDev \\d\\d ([\\d.]+) -->\\;version:\\1",
+      "meta": {
+        "generator": "^WEBDEV$"
+      },
+      "website": "https://www.windev.com/webdev/index.html"
+    },
     "WebGUI": {
       "cats": [
         1