Refactor create battle

[pantoja]

Description

Refactored Create Battle page using React.

• Refactored the endpoints involved (battle creation, pokemon listing a user listing)

• Used react-bootstrap-typeahead to render input field with typeahead

• Used react-sortable-hoc to allow user to sort pokemon by using drag and drop

Trello Card

As a Programmer I refactor the battle creation page to React

Screenshots (if appropriate):

Steps to reproduce (if appropriate):

Link: https://staging-pantoja-pokebattle.herokuapp.com/
Credentials: username: admin@admin.com password: senhaadmin or you can register

1. Create a battle in the site
2. Check if battle is created by accessing the Active Battles page. Make sure the informations are right, including the order of the chosen pokemon
3. Try creating another battle with repeated pokemon, or a battle using Mewtwo in your team to exceed the point limit, it should raise an error

[victorfsf]

This annotate could be part of the queryset above, before the if. There's less repetition this way.

[victorfsf]

I was able to create a battle with two of the same pokemon:

The warning Your team has duplicates, please use unique pokemon raises if I have 3 repeated pokemon, but not 2.

Other than that, LGTM!