Web scribe

[slassen]

This PR has several functions which together will allow posts on the website w/o manually creating a JSON file.

• Adds a privilege named WEB_SCRIBE
• Allows accounts with the privilege WEB_SCRIBE (indicated by the bit mask 2 on the priv column, accounts table) to write and delete posts on the website.
• Moves the validate middleware to validateJWT in the utils folder
• Adds a clear function for cache
• Adds an admin tab for the website that currently only has posting available
• Adds two new queries, misc/trash and misc/write that modify posts on the website
• Updates misc/news to read from the db
• A couple Prettier updates because it was throwing big red errors on dev
• CSS + React component for writing in Markdown