This is a checkpoint of the improvements to the sqlite integration. The
data_parser stuff should be much better now and I've tried to improve
other parts of the user experience as well.
* lnav.cc: Rerun searches in the text view when changing files. Fix the
scrollbar behavior when the mouse is used.
* lnav_commands.cc: Switch to the graph view when doing graphing.
* xterm_mouse.hh: The origin for mouse coordinates should be 0,0 and not 1,1 .