Improve and simplify StemQueue zk-vote process.

[noahdahlman]

Enhancement

Currently, there are two tabs on the project details page, with a tab "Stem Queue" that opens the Stem Queue component, we should remove the Stem Queue tab, and instead move the functionality into the ProjectDetails component.

This is the stem queue tab we want to remove.

This is the stem queue page that we want to restyle into project details page.

A user opens a zk-vote enabled public project, they add a stem, this adds the stem with a dotted border to indicate it hasn't been approved yet. If the user is a member of the stem's voting group, they have the option to approve or deny the stem in-place on the project's details page.

Requirements:

• Remove "Stem Queue" tab from the project details
• All of the original functionality of the stem queue tab should be preserved in the project details page. e.g. Approving a vote, casting a vote, registering to vote.
• The UIUX should feel intuitive, open to discussion / suggestions on the details.