button for encryption is missing

[tristan-k]

Since Roundcube 1.2 Beta it is possible to encrypt emails in the browser with mailvelope. There is button called "Encrypt" which enables the feature. After activating the mabola skin the button is missing. Please add the graphic to https://github.com/EstudioNexos/mabola/blob/master/images/buttons.png.

[n3storm]

Update: we cannot test this cause we are using beta release, not dev release. We will soon add icon but untested.