Send only signed + send signed by default

[Nedialko Kondev, MobiSystems, AquaMail Support]

Hi All,

https://www.aqua-mail.com/download/AquaMail-market-1.30.0-1820-develop-596e0e7f6.apk

This is a development build, containing an update to the S/MIME functionality (before installing it create a backup' dev builds are not available on Play Store and have not gone through beta testing):
- you can now sign messages by default or choose to sign per message
- you can now encrypt messages by default or choose to encrypt per message

In addition to that change we've made a visual update to "High priority" and "Request read receipt" chips in the compose screen. Check the screenshot for reference.



Regards,
Nedialko