Updated Export Page (#63)

* - Updated Export page with better visuals, toast notifications, animations
- Changed return type for CSV and PDF in order to bubble up success to UI
- Added GetFlutter UI Widget library

* Tweaked widget sizes in export
Changed background

Changed sidebar Image to OSU Logo, looks better and more professional.

* Fixed text size mismatch

* Commented out background image for the time being

added flex to widgets for different screens.

* Wrapped widget in singlechildscrollview for rendering fix on reload after sending email

changed font weight to be more noticeable on switch for the time being

blamo/lib/Export/CSVExporter.dart

@@ -17,13 +17,14 @@ class CSVExporter {
 
   CSVExporter(this.stateData);
 
-  void exportToCSV() async{
+  Future<String> exportToCSV() async{
     String toWrite;
     await getData();
     buildCSVLines();
     toWrite = formatLinesToString();
     debugPrint("toWrite: $toWrite");
-    csvWrite(toWrite, stateData.currentDocument);
+    String response = await csvWrite(toWrite, stateData.currentDocument);
+    return response;
   }
 
   Future<int> getData() async{
@@ -112,7 +113,7 @@ class CSVExporter {
     return formattedString;
   }
 
-  void csvWrite(String toWrite, String csvName) async {
+  Future<String> csvWrite(String toWrite, String csvName) async {
     await new Future.delayed(new Duration(milliseconds: 50));
     PermissionStatus permission =
     await PermissionHandler().checkPermissionStatus(PermissionGroup.storage);
@@ -132,9 +133,9 @@ class CSVExporter {
       debugPrint("(CSV) printing csv to: $filepathCSV");
       await file.writeAsString(toWrite);
       debugPrint("(CSV) done writing csv");
-      return;
+      return "done";
     }
-    return;
+    return "failed";
   }
 
   //testing

blamo/lib/Export/email.dart

@@ -20,6 +20,7 @@ Future<String> sendEmail(String documentName,String docType) async {
     debugPrint("output path: " + outputPath);
   } catch (e) {
     print("EMAIL.dart - No filepath found for document to send");
+    return "No $docType type file found for $documentName";
   }
 
   if(outputPath != null) {