Search through chat

[JadedCtrl]

Searching through the current chat buffer should be possible (meta-f or menu item).

Since the chat buffer doesn't display all logs, a button should be available in the search dialogue that offers to start TextSearch on the room's cache file (which contains all logs). To complement this, rooms' cache files might want to set their type to text/plain or something similar.

[JadedCtrl]

Half-way done with 3689f6c― META-f now calls TextSearch on the chat's log-file.