Hide the buttons in the header until the page has loaded (to avoid unstyled buttons), a 'standard'-height has been set on the header and a 'standard'-margin on the div containing the lists in order to decrease the problem of elements moving and changing height on page load
Merge remote-tracking branch 'upstream/master' into hide-btns-until-ready
Fixes after @fredrikpersson's review
Merge pull request #137 from ChristofferL/hide-btns-until-ready

Hide btns until ready
Merge remote-tracking branch 'upstream/master' into text-view-selec-fields
Added error-messages for invalid fields