* Less margin: the content appears as the text of the message.
* Streamlined footer: everything on one line, with a small separator.
* Zimbra (www.zimbra.com) chokes on HTML tables, and doesn't display
the content of the message. Switching to a simpler layout fixes the
issue.
Rationale:
* Consistency: the link is always at the same place.
* Streamlining: it allows to remove the header banner, now that the
project url can be accessed from another place.
When an email notification concerns a specific object (issue, note,
merge request, etc.), add a link to the footer of the email that opens
the item's page in a web browser.
Rationale:
* The link is predictable: always the same text, always at the same
location, like any reliable tool.
* It allows to remove the inline-title in many emails, and leave only
the actual content of the message.
