[fix] make targets engines.languages and useragents.update

Since [PR 2600] is merged the update scripts for languages and useragent has
been moved to folder:

    searx_extra/update/

[PR 2600] https://github.com/searx/searx/pull/2600

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

Makefile

@@ -94,15 +94,14 @@ project: buildenv useragents.update engines.languages
 
 engines.languages:  pyenvinstall
 	$(Q)echo "fetch languages .."
-	$(Q)$(PY_ENV_ACT); python utils/fetch_languages.py
-	$(Q)echo "update searx/data/engines_languages.json"
-	$(Q)mv engines_languages.json searx/data/engines_languages.json
-	$(Q)echo "update searx/languages.py"
-	$(Q)mv languages.py searx/languages.py
+	$(Q)$(PY_ENV_ACT); python ./searx_extra/update/update_languages.py
+	$(Q)echo "updated searx/data/engines_languages.json"
+	$(Q)echo "updated searx/languages.py"
 
 useragents.update:  pyenvinstall
-	$(Q)echo "Update searx/data/useragents.json with the most recent versions of Firefox."
-	$(Q)$(PY_ENV_ACT); python utils/fetch_firefox_version.py
+	$(Q)echo "fetch useragents .."
+	$(Q)$(PY_ENV_ACT); python ./searx_extra/update/update_firefox_version.py
+	$(Q)echo "updated searx/data/useragents.json with the most recent versions of Firefox."
 
 buildenv: pyenv
 	$(Q)$(PY_ENV_ACT); SEARX_DEBUG=1 python utils/build_env.py