Allign "Add Repository" button properly on Configuration screen

When no repository was created, the Add Repository button allignment is weird.

The following CSS causes it to float around by 5% from the left.

.no-repository > #repository-list > .aui-toolbar {
left: -40px;
margin-left: 5%;
}

#repository-list > .aui-toolbar {
margin: 0 5px 1em;
vertical-align: middle;
}

We should get rid of the first block completely and remove the 5px in the second block to left-align it with the text.