Speeding up the annotation work: less clicks!

The annotation website become better every release! Nevertheless, I propose some UX improvements, with the goal of minimizing clicks.

1. Please avoid the double step (review -> confirm):

Just collapse in a single unique button SUBMIT

2. if a user want to skip, please avoid the double step (skip -> note box):

I'd propose to have a separate "SKIP & NOTE" button on the left of the SKIP button, or better having a SKIP button with a drop-box with pre-selected reasons and a final option to write a note, like

• I don't understand the content
• I'm not a domain expert
• blablabla
• Let me add a note

3. Enable function keys
Because Yannic is a vim enthusiast (if I well understood / I'm joking), It could be great to avoid clicks, allowing key functions (:w) or a more common Ctrl-S (here I'm serious).

No files, tests, or entry points are named; start by locating the annotation website controls shown in the screenshots and reviewing their current review, confirm, skip, and note flows. Done means reducing review/confirm and skip/note to the proposed interactions and adding keyboard shortcuts such as Ctrl-S, with the resulting flows verified in the website.