Some people prefer to write in markdown,
or had already written stuff in markdown,
so this commit adds a button to the editor t
hat will convert the markdown to the editor's format.
The backend was updated to include the
pad endpoints.
The mock pad endpoints were removed
in favor of the real ones.
We adapted the types as well to match
the real ones.
Add a test to check the pdf export of the
impress app.
It intercept the download of the PDF and
read its content.
We can assert that the template is correctly
rendered, and that the pad text is present as
well.
