Error on the Firestore viewer when trying to decode URI containing the character '%'.

[AntonioRdzNav]

This bug was found when resolving the pull request #258, which encodes and decodes collection and document ids, in order to handle special characters.

The situation is that when an URI has the character '%', it is correctly encoded, but the React library 'history' automatically decodes only the character '%' and pushes this path to the HTML5 history element. This is a known issue of the library that can be found here.

Because of this automatic decode issue, the moment the partially encoded URI is tried to be decoded on our code, an error occurs due to malformed URI.