Mobile events, updates to video events

@stroilova , @mulby , @nasthagiri , @gwprice , @lou-wang , @mhoeber here is a framework that we can work from to get initial documentation out with the release. Notes:
- I am not sure that the same additional context fields that I see for the v.0 play_video (Olga shared with me) event also apply to all of the other video events.
- the event field names for the new edx.app.browser.launched event in Olga's spreadsheet are very rough
Hi @nasthagiri, awesome! I'm looking forward very much to standardization.
Created  https://edx-wiki.atlassian.net/browse/MOB-835 and notified you and
Lou for prioritization. Thank you very much for being appreciative of
detail here.

On Wed, Oct 15, 2014 at 9:17 PM, Nimisha Asthagiri <notifications@github.com
> wrote:

> In docs/en_us/data/source/internal_data_formats/tracking_logs.rst:
>
> > @@ -600,9 +745,16 @@ of the video file and play automatically stops.
> >     * - Field
> >       - Type
> >       - Details
> > +   * - ``current_time``
> > +     - integer
>
> @stroilova <https://github.com/stroilova> I agree with @pmitros
> <https://github.com/pmitros> regarding using floats for time fields. And
> yes, I agree we should standardize on this. Can we add this change to the
> mobile app TODO list in JIRA?
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/edx/edx-platform/pull/5529/files#r18934028>.
>