Upload buttons should be out of the humhub-ui-richtext edit area

[Gilbertdelyon]

The issue:
When you write a message in you smartphone (narrow screen ) you only get a narrow space because of a "padding-rignt: 105px" for the upload buttons.

My temporary remedy in custom theme:

.mail-message-form .upload-buttons {
  position:inherit !important;
}
.mail-message-form .humhub-ui-richtext {
  padding-right: 12px !important;
}

And now this is what I get :)) much more convinient!