v1.13 Pagination and search endpoints

Update your image with:

docker pull promptpanel/promptpanel:1.13

and then re-create your container.

Features

• Added pagination to API, updated templates for Message pagination (stubs for Files / Threads).
• Added search endpoint (beta) to API.

Enhancements

• Updated completion model to calculate tokens just-in-time.
• Visual tweaks / fixes.
• Fixed update panel endpoint (allow all adminstrators to update panels).