some changles to sidebot

some changles to sidebot

however, please note that sidebot definitely doesn't work correctly at the
moment:
- I noticed incorrect behavior when a single run retrieves enough pages that
multiple entries should be added to the sidebar lists
- One time, bingus crashed and I found continuous messages about OOM killing
sidebot processes. So, check the possibility of significant memory usage, or
at least make sure that the number of concurrent sidebot processes is limited
(btw, sidebot probably can't handle multiple sidebots running concurrently, so
idk why I thought it would be okay to use cron for this in the first place)
- sidebot is disabled until these can be addressed lmao