Let users know that custom error codes can exist for delete/archive
Remove all "Object Specifications" from documentation

The Object specifications are largely unnecessary, because we already
have examples for each action (so consumers know what to expect)
Added Explanations and Custom Error Codes for Current User actions

Added a description for each non-standard API action in the Current
User resource, and added custom Error codes for certain API actions if
necessary.
Add Explanations and Custom Error Codes for Entry actions.

Added descriptions for each non-standard API action in the Entry
resource, and added custom Error Codes for certain API actions as
necessary.
Use 202 Status Code when Creating Imports to indicate background queue

Using the `202 Accepted` indicates that the request is valid and will
be processed, but that the request has not yet been completed. This
is useful because it indicates to clients that the Import has not
yet been finished, and is instead running in a background queue.
Clarify that GET /projects/ will only return accessible projects

Since the authenticated user could be a freelancer, or only have
access to certain projects, we have clarified this in the API docs.