Davide Gessa

- [x] Fix travis-ci build - [ ] Integrate appimage creation on travis - [ ] Create the appimage script

- [x] Add a sections for tools related to WL regattas - [ ] Create a gauge for displaying numerical data - [ ] Timer - [ ] Startline calculator...

``` [2021-06-09 13:43:00,748] mainwindow: Quitting... Process Process-14: Traceback (most recent call last): File "/usr/lib/python3.9/multiprocessing/managers.py", line 801, in _callmethod conn = self._tls.connection AttributeError: 'ForkAwareLocal' object has no attribute 'connection' During handling...

- [x] Empty kivy module with KivyMD - [ ] Build procedure for android / ios - [ ] Define a simple mobile UI - [ ] Create a map...

Implement poi symbols, using a cellrenderercombo with a pixbuf. https://docs.gtk.org/gtk3/class.CellRendererCombo.html https://stackoverflow.com/questions/15807611/how-can-i-create-a-gtk-combobox-with-images-in-python

Create a custom render for rendering CM93 v2 vector format. https://github.com/OpenCPN/OpenCPN/blob/master/data/s57data/rastersymbols-day.png

Using Kivy JSONStorage https://kivy.org/doc/stable/api-kivy.storage.html or simply by getting a writable directory