Import Style Guide

[zghera]

Issue summary

Consistent import ... statements throughout the project.

Expected behavior

The general groupings should be:

import React ...
any other react specific imports (ex: react-router-dom)

React bootstrap, Firestore, other 3rd party imports

Local file imports

Within each of the sections, the order of the import "types" should be from least to most specific. Example:

import 'file.js';
import * as File from 'file.js';
import File from 'file.js';
import { Func } from 'file.js';

Actual behavior

Inconsistencies between (and potentially within) the user auth, activities, and trips sections of SLURP. First pointed out in PR #82 comments.