Release Notes 15.2.3

Version 15.2.3 contains the following fixes:
– We fixed an issue when saving a pencast where an image is used with a name containing certain characters, the pencast would not be saved correctly. Trying to open such a pencast would make iXplain crash.
– We fixed an issue where exporting a voice-over pencast with an image, but where the voice-over part is not done, would make the app crash.
– We fixed an issue where the settings page might be empty after several switches with the start page