[18] grpc server and Rest API http client architecture

See merge request !92

Devops change builder

See merge request !93

ability to attach visual signature on pdf document

Closes dashboard#697

See merge request !90

Add hexStringToUtf8ByteArray

See merge request !91

Revert "Added checking the case when txtBody and htmlBody is passed but they are empty (User left blank email. Roundcube version)"

This reverts commit 6b44ea63.

Added checking the case when txtBody and htmlBody is passed but they are empty (User left blank email. Roundcube version)

This reverts commit 022fec62.

This reverts commit 72df38f5.

Change style of generated QR code

Closes dashboard#954

See merge request !89

Merge branch '909-email-is-not-archived-when-you-send-email-and-register-the-email-of-the-receiver-an-an-employee' into 'master'

Add finalize employee registration method.

See merge request !87

ci: image removal

See merge request !86

351 employee account status

Closes dashboard#736

See merge request !85