Add missing prepend function in js for history loading
The following Merge Request (MR) has been forwarded from GitHub in order to prevent the GNOME Project from losing contributions coming from un-official channels. And for contributors to not see their valuable contributions not being accounted for.
Github handle: noonien-d
Body of the MR:
I experienced a bug in master regarding chat history not getting shown sometimes. This is due to a missing "prepend" function in the webview js code.