refactor: make add year form more compact

Fix #1454

Author: bahoss

src/main/frontend/src/components/AddReleaseYearForm.js

@@ -129,19 +129,21 @@ class AddReleaseYearFormView extends React.PureComponent {
 								))}
 							</select>
 						</div>
+						<div className="col-sm-3">
+							<button
+								type="submit"
+								className="btn btn-primary btn-sm"
+								disabled={ isDisabled }>
+								{ l10n['t_add'] || 'Add' }
+							</button>
+						</div>
 					</div>
 					<div className="col-sm-offset-3 col-sm-4">
 						<span
 							id="release-year.errors"
 							className={ `help-block ${hasValidationErrors ? '' : 'hidden'}` }>
 							{ validationErrors.join(', ') }
 						</span>
-						<button
-							type="submit"
-							className="btn btn-primary btn-sm"
-							disabled={ isDisabled }>
-							{ l10n['t_add'] || 'Add' }
-						</button>
 					</div>
 				</form>
 			</div>