Run eslint --fix

Fixing 1000s of lint issues. Some rules cannot be `--fix`ed but this goes some way to linting the entire codebase.

src/utils/DecryptFile.js

@@ -28,8 +28,8 @@ import Promise from 'bluebird';
  * @return {Promise} A promise that resolves with the data:// URI.
  */
 export function readBlobAsDataUri(file) {
-    var deferred = Promise.defer();
-    var reader = new FileReader();
+    const deferred = Promise.defer();
+    const reader = new FileReader();
     reader.onload = function(e) {
         deferred.resolve(e.target.result);
     };
@@ -61,7 +61,7 @@ export function decryptFile(file) {
         return encrypt.decryptAttachment(responseData, file);
     }).then(function(dataArray) {
         // Turn the array into a Blob and give it the correct MIME-type.
-        var blob = new Blob([dataArray], {type: file.mimetype});
+        const blob = new Blob([dataArray], {type: file.mimetype});
         return blob;
     });
 }