Implement the '...' search button for Uemis dive computers

Right now the search button isn't connected for any device (clearly an
oversight). At least for the Uemis I think I have a sane implementation of
what that should do.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Convert more TRUE/FALSE to stdbools true/false

In Qt5, Qt doesn't define TRUE/FALSE anymore, so we need to stick to
stdbools to have Qt5 builds working.

Signed-off-by: Anton Lundin <glance@acc.umu.se>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Only recalculate the tooltip if time has changed

Small optimization, but seems to make sense.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
New profile: partial addition of heartrate

This was done during an IRC hacking session with Tomaz.
It compiles, it shows something but not the right graph.
Committed here so Tomaz and I can continue to work on it.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>