Users should be able to navigate through the interface ideally using
only the keyboard, as specified in the GNOME Human Interface Guidelines.
This however is currently possible in the window page with shortcuts
when it comes to switching among week and month views, and jumping to
today's date. It is also interesting to have access keys attached to
such labels, so that the user does not need to look for the keyboard
shortcuts.
Using the first letter for each of the labels as mnemonics suffices in
this case, since there is no conflict, none of them is a thin letter nor
has descenders, and they are easy to remember.
The code block for the commit message contains blank characters that are
breaking the markdown rendering engine, making the message block to
stop right after the first paragraph, and getting rid of the last line.
Simply cleaning these blank characters make the code block to render
properly. Note that I've also specified the type of the block, which is
plain text.
Henrique F. Simões