Fix positioning of add-to-tree dropdown

app/assets/stylesheets/bootstrap_migration.scss

@@ -36,6 +36,10 @@ html [type="button"],
   cursor: pointer;
 }
+a {
+  color: $gl-link-color;
+}
+
 .form-group.row .col-form-label {
   // Bootstrap 4 aligns labels to the left
   // for horizontal forms

app/assets/stylesheets/framework/typography.scss

@@ -432,11 +432,3 @@ textarea {
     color: $placeholder-text-color;
   }
 }
-
-
-/**
- * global colors
- */
-a {
-  color: $gl-link-color;
-}

app/assets/stylesheets/pages/tree.scss

@@ -41,11 +41,6 @@
           position: relative;
         }
       }
-
-      .add-to-tree-dropdown {
-        position: absolute;
-        left: 18px;
-      }
     }
   }