Fix tabindex of search button

frontend/app/map/search/search.html

@@ -8,7 +8,7 @@
 						<a href="javascript:" class="reset-button form-control-feedback" ng-click="searchString=''; search()" ng-show="searchString.length > 0"><span class="icon-clear"></span></a>
 					</div>
 					<span class="input-group-btn">
-						<button type="submit" class="btn btn-default"><span class="glyphicon glyphicon-search" tabindex="2"></span></button>
+						<button type="submit" class="btn btn-default" tabindex="2"><span class="glyphicon glyphicon-search"></span></button>
 						<button type="button" class="btn btn-default" ng-click="showRoutingForm()" tabindex="3" uib-tooltip="Switch to routing form" tooltip-append-to-body="true"><span class="glyphicon glyphicon-road"></span></button>
 					</span>
 				</div>