Update table columns

[oli-lane]

Update the columns for the table on the home page to display the relevant information for the proposals. You should references the proposal schema in src/database/proposalSchema.ts, but note that the project specs have changed since that was created so it may not have all the necessary information.

Some other things we also want to know about projects:

• date of any public meeting it's on the agenda of
• when the public comment period ends
  ~see if you can think of anything else that might be important to know about the proposals!

Make sure to make some new dummy data and ensure that all the sorting still works (especially with the columns with dates)