Correct small typo.

Signed-off-by: Cristian Ionescu-Idbohrn <cristian.ionescu-idbohrn@axis.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
User manual: updates

Correct error in manual
Add some short text in sections dealing with equipment.

[Dirk Hohndel: clean up whitespace & regenerate the html file]

Signed-off-by: Willem Ferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Improve GPS string handling

This adds support for two more GPS coordinate formats and also fixes a
couple of issues with the previous implementation.

We used to only support full degrees and decimal minutes. We now also
support fully decimal and degrees, minutes and decimal seconds.

The previous implementation would color the input field red if either it
couldn't parse the string, or if it was able to parse it but it was the
same as the previous location. That's misleading.

The previous implementation also changed all gps coordinates to the new
coordinates in a multi-dive edit - instead of just changing the ones that
are the same as the master dive.

Fixes #387

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