MOBILE-3617 release: Bump version for 3.9.4

Author: jleyva

config.xml

@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='utf-8'?>
-<widget android-versionCode="39400" id="com.moodle.moodlemobile" ios-CFBundleVersion="3.9.4.0" version="3.9.4-dev" versionCode="39400" xmlns="http://www.w3.org/ns/widgets" xmlns:android="http://schemas.android.com/apk/res/android" xmlns:cdv="http://cordova.apache.org/ns/1.0">
+<widget android-versionCode="39400" id="com.moodle.moodlemobile" ios-CFBundleVersion="3.9.4.0" version="3.9.4" versionCode="39400" xmlns="http://www.w3.org/ns/widgets" xmlns:android="http://schemas.android.com/apk/res/android" xmlns:cdv="http://cordova.apache.org/ns/1.0">
     <name>Moodle</name>
     <description>Moodle official app</description>
     <author email="[email protected]" href="http://moodle.com">Moodle Mobile team</author>
@@ -244,7 +244,7 @@
             <true />
         </edit-config>
         <edit-config file="*-Info.plist" mode="merge" target="CFBundleShortVersionString">
-            <string>3.9.4-dev</string>
+            <string>3.9.4</string>
         </edit-config>
         <config-file parent="FIREBASE_ANALYTICS_COLLECTION_DEACTIVATED" target="*-Info.plist">
             <string>YES</string>

src/config.json

@@ -3,7 +3,7 @@
     "appname": "Moodle Mobile",
     "desktopappname": "Moodle Desktop",
     "versioncode": 3940,
-    "versionname": "3.9.4-dev",
+    "versionname": "3.9.4",
     "cache_update_frequency_usually": 420000,
     "cache_update_frequency_often": 1200000,
     "cache_update_frequency_sometimes": 3600000,