Meeting meta data

[noyainrain]

Add more useful meta data to a meeting, e.g.:

• Time
• Location

[noyainrain]

UI edit mockup:

[noyainrain]

UI mockup: https://app.moqups.com/NoyaInRain/zqvfwQiAkh/view/page/a5793fa1a

[noyainrain]

API draft:

class Meeting:
    """
    .. describe:: time

       Date and time the meeting begins. May be ``null``.

    .. describe:: location

       Location where the meeting takes place. May be ``null``.
    """

[noyainrain]

New dependency: Pikaday by David Bushell

The only alternative without a framework dependency is Rome, which is not as polished as Pikaday yet.