import notes from tar archive, closes #63

src/public/javascripts/export.js

@@ -6,6 +6,26 @@ function exportSubTree(noteId) {
     download(url);
 }
 
-function importSubTree(noteId) {
+let importNoteId;
 
-}
+function importSubTree(noteId) {
+    importNoteId = noteId;
+
+    $("#import-upload").trigger('click');
+}
+
+$("#import-upload").change(async function() {
+    const formData = new FormData();
+    formData.append('upload', this.files[0]);
+
+    await $.ajax({
+        url: baseApiUrl + 'import/' + importNoteId,
+        headers: server.getHeaders(),
+        data: formData,
+        type: 'POST',
+        contentType: false, // NEEDED, DON'T OMIT THIS
+        processData: false, // NEEDED, DON'T OMIT THIS
+    });
+
+    await noteTree.reload();
+});