Issue #2428391: Welcome page themeing

sass/partials/drupalorg/_welcome.scss

@@ -2,6 +2,19 @@
   .form-item-field-organizations-und-0--weight {
     display: none;
   }
+  .user-picture {
+    @include span-columns(1, 6);
+  }
+  .form-item-files-picture-upload {
+    @include span-columns(5 omega, 6);
+  }
+  .form-item-timezone select {
+    width: 100%;
+  }
+  .form-submit {
+    @include large-button;
+    white-space: normal;
+  }
 
   @include breakpoint($small) {
     .group-left, .group-right {