Added a toolbar to the profile

The toolbar adds two buttons to the profile.
The user can now toggle the scaling (zoomed to dive/round up to 30 mins)
and adding /removing ruler to/from the profile using this toolbar.

Signed-off-by: Maximilian Güntner <maximilian.guentner@gmail.com>

2 files changed, 162 insertions, 0 deletions

diff --git a/icons/ruler.svg b/icons/ruler.svg
new file mode 100644
index 000000000..27e88bb44
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diff --git a/icons/scale.svg b/icons/scale.svg
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