fix soy problems
add missing parameters to soy template calls
add implementations of ScheduleResolver.schedule count method
Add 'count' parameter to schedule resource

The /3.0/schedule resource will respond to `from` and `count`
parameters.
C4 EPG ID Refactor

Refactor C4 EPG Updater to use provided Progamme IDs. Synthesized items
should not be created. Existing items will have an ID-based URI alias
added.
C4 PC/Xbox adapter work-in-progress
C4AtomBackedBrandUpdater resolves existing content and merges with fetched data
Add new tests and fix existing ones.
A brand name should always be returned; it's an error if one cannot be.
If we are ingesting for a platform then we should set the platform on the version's policy.
Support C4 programmeId-style curies
Support null objects
Update base URI and add xbox scheduled task
Fix and add tests
Change base URIs
Remove redundant class; we now use the standard AtoZ updater for other platforms
Change URI pattern to pmlsc.channel4.com
Some small fixes:
- Ensure an episode URI can always be constructed
- Only set duration from fetched item if we have one
- Improve logging
Add an alias of series/episode form when creating an item from the 4od atom feed.
Only extract an encoding if we have a media player entry. Previously we were extracting if we had any media,
including just thumbnails