Add ability to remove profile picture on Profile Settings (#538)

* Add ability to remove profile picture on Profile Settings

* Fix lint

* Fix according to review

front/src/modules/users/utils/getProfilePictureAbsoluteURI.ts

@@ -0,0 +1,5 @@
+export function getImageAbsoluteURI(imageRelativePath?: string | null) {
+  return imageRelativePath
+    ? `${process.env.REACT_APP_FILES_URL}/${imageRelativePath}`
+    : null;
+}