There are some common questions that keep coming up when users are
editing or creating templates. This commit adds a pattern for sections
of guidance which can be shown/hidden.
It then modifies the guidance as follows.
Change:
- guidance about placeholders; give an example about what to do and what
not to do (because the mistake we keep seeing people make is putting
the thing itself, not the name of the thing)
Add (pretty basic at the moment but a need for these has come out of
research):
- guidance about links
- guidance about message length for text messages
For users who:
- want to send messages from a template
- want to edit templates
For developers:
- who need to get the ID of a template
This commit mainly cleans up the choose template page so there are less
options, and the options that are there are less wordy.
This means:
- moving ‘send yourself a test’ onto the send messages page, and making
it button
- stripping a lot of stuff out of the ‘send from API’ page, so it’s more
obvious what the template ID is
