button is hidden

[lgelauff]

While testing import function on new montage-dev, i got an error message (expected). The message popup (import warning) seems a bit off though, one of the buttons only shows up as grey rectangle when mouse-over - supposedly a cancel button. The button text is missing (defined in round-new.component.js).

Reproduce: create new campaign. Create new round with import file list through copypaste. Paste a list that will be rejected entirely (e.g. a single line with more than a single filename)