Separate name and label field for Custom Object Type

[ed-ud]

Currently there is only one "Name" field, and a "Readable plural name" field when setting up the name for a Custom Object Type.
If you choose a Name like "DNS Record", then the REST API endpoints automatically use "dns%20record" in them, which is kinda ugly.

It seems like it might be better to have a Name field that gets used for REST API, and a separate "Label" field that is used in the UI for display. And it might make sense to change the "Readable plural name" field to be referred to as "Readable plural label".

[mrmrcoleman]

@ed-ud this was fixed in #59 which was released in https://github.com/netboxlabs/netbox-custom-objects/releases/tag/v0.3.0

I recommend using the latest 0.4.1 version however.