Merge branch 'fp2-1924' into 'master'

FPII-1924: Let Fairphone Updater use https when connecting to the OTA server

Change OTA server url to https.

See merge request !13
diff --git a/res/values/config.xml b/res/values/config.xml
index 8975c21..3ae7fe3 100644
--- a/res/values/config.xml
+++ b/res/values/config.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
 
-    <string name="downloadUrl" translatable="false">http://ota.fairphone.com/</string>
+    <string name="downloadUrl" translatable="false">https://ota.fairphone.com/</string>
     <string name="configFilename" translatable="false">updater</string>
     <string name="config_zip" translatable="false">.zip</string>
 	<string name="config_xml" translatable="false">.xml</string>