ContentDB redesign: Add package dialog

Co-authored-by: Gregor Parzefall <gregor.parzefall@posteo.de>

doc/lua_api.md

@@ -6581,6 +6581,9 @@ Formspec
 * `minetest.formspec_escape(string)`: returns a string
     * escapes the characters "[", "]", "\", "," and ";", which cannot be used
       in formspecs.
+* `minetest.hypertext_escape(string)`: returns a string
+    * escapes the characters "\", "<", and ">" to show text in a hypertext element.
+    * not safe for use with tag attributes.
 * `minetest.explode_table_event(string)`: returns a table
     * returns e.g. `{type="CHG", row=1, column=2}`
     * `type` is one of:

doc/menu_lua_api.md

@@ -57,7 +57,10 @@ Functions
   * returns the maximum supported network protocol version
 * `core.open_url(url)`
   * opens the URL in a web browser, returns false on failure.
-  * Must begin with http:// or https://
+  * `url` must begin with http:// or https://
+* `core.open_url_dialog(url)`
+  * shows a dialog to allow the user to choose whether to open a URL.
+  * `url` must begin with http:// or https://
 * `core.open_dir(path)`
   * opens the path in the system file browser/explorer, returns false on failure.
   * Must be an existing directory.
@@ -65,6 +68,8 @@ Functions
   * Android only. Shares file using the share popup
 * `core.get_version()` (possible in async calls)
   * returns current core version
+* `core.get_formspec_version()`
+  * returns maximum supported formspec version