Document ids with trailing spaces and trailing tabs are not supported by Fauxton while valid for CouchDB

[jausions]

Trailing white spaces are not supported by Fauxton for document IDs.

Expected Behavior

A document with an id of " with spaces " or "\twith\t\tabs\t" should be accessible from Fauxton.

Current Behavior

The document is listed but clicking it yields a "Does not exist" error.

Possible Solution

Do not trim the trailing white spaces from a document id when building URLs.

Steps to Reproduce (for bugs)

1. Create 2 documents in a database. One with {"_id": " with space "} and one with {"_id": "\twith\ttabs\t"}.
2. Navigate with Fauxton to the database.
3. Notice the 2 documents are present, and hovering the "copy" shows the proper ids.
4. Click on their name / id to open documents.
5. "Not found" error is displayed.
6. Look a the web browser console's network to see that the trailing white spaces were trimmed, while the leading and middle ones were properly URL-encoded.

Context

No special context. Just improper support for some document ids (albeit they probably are seldom used.)

Your Environment

• Version used: Fauxzton v2.3.1
• Browser Name and version: Chrome 77.0
• Operating System and version (desktop or mobile): Windows 10.

[popojargo]

Fixed on master