Completed queries added to the history bar twice

[Mnikley]

Description:
After a request is completed, the most recent query is duplicated multiple times in the history side-bar. The issue originates from the getResults() function in index.html. It's worth noting that the backend code functions correctly without any errors and stores elements once in the SQLite database.

Expected Behavior:
The most recent query should only be added once to the history side-bar when a request finishes.