feat(ui): prevent export window from overflowing

On subsequent openings, map export window might have elements that are too wide triggering a horizontal scrollbar to appear.

Signed-off-by: Aleksuei Riabtsev <aleksuei.riabtsev@ec.gc.ca>

src/js/RAMP/Modules/imageExport.js

@@ -121,6 +121,9 @@ define([
                     .set(mapExportStretcher, { clearProps: "all" })
                 ;
 
+                // resize the notice container as it might be too large from the previous map export
+                mapExportNoticeContainer.css({ width: mapExportStretcher.width() - 2 });
+
                 promise.then(
                     function (event) {
                         var localCanvas,
@@ -234,8 +237,6 @@ define([
                         .attr('aria-disabled', false)
                         .on('click', generateExportImage);
 
-                    mapExportNoticeContainer.css({ width: mapExportStretcher.width() - 2 });
-
                     // disable for IE9 and IE10
                     // IE10 does not support CORS for canvases: http://stackoverflow.com/questions/18112047/canvas-todataurl-working-in-all-browsers-except-ie10; http://stackoverflow.com/questions/16956295/ie10-and-cross-origin-resource-sharing-cors-issues-with-image-canvas
                     if (RAMP.flags.brokenWebBrowser || RAMP.flags.ie10client) {