Rename "Import file" to "Open file"

frontend/app/map/toolbox/toolbox.html

@@ -38,7 +38,7 @@
 					<a href="javascript:" id="toolbox-tools-dropdown" uib-dropdown-toggle role="button">Tools <span class="caret"></span></a>
 					<ul uib-dropdown-menu aria-labelledby="toolbox-layers-dropdown" class="dropdown-menu-right">
 						<!--<li ng-if="!readonly"><a href="javascript:" ng-click="openDialog('copy-pad-dialog')">Copy pad</a></li>-->
-						<li><a href="javascript:" ng-click="importFile()">Import file</a></li>
+						<li><a href="javascript:" ng-click="importFile()">Open file</a></li>
 						<li ng-if="padId"><a href="{{padData.id}}/geojson" uib-tooltip="GeoJSON files store all map information and can thus be used for map backups and be re-imported without any loss." tooltip-placement="left">Export as GeoJSON</a></li>
 						<li ng-if="padId"><a href="{{padData.id}}/gpx?useTracks=1" uib-tooltip="GPX files can be opened with most navigation software. In track mode, any calculated routes are saved in the file." tooltip-placement="left">Export as GPX (tracks)</a></li>
 						<li ng-if="padId"><a href="{{padData.id}}/gpx?useTracks=0" uib-tooltip="GPX files can be opened with most navigation software. In route mode, only the start/end/via points are saved in the file, and the navigation software needs to recalculate the routes." tooltip-placement="left">Export as GPX (routes)</a></li>