Display the correct event type when displaying event teasers

Problem/Motivation

Currently when using the social blue theme with the new style (Sky) set, the event teasers are displaying 'event' text above the event title. When using the social_event_type module we can distinguish between different types, so it would make a lot more sense to display the actual event type above the title instead of the generic "Event" text.

Steps to reproduce

1. Set social blue theme
2. Under theme configuration, set the style setting to Sky (New)
3. Enable the social_event_type module
4. Create new event types and create a new event
5. Go to /community-events page and see the teasers, even though we have different type set on an event, the text above the event title still displays "Event".

Proposed resolution

We need to pass the event type to node teaser rendering template.

Remaining tasks

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User interface changes

Event teaser will now display event type above the title if it is set, otherwise just "Event".

API changes

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Data model changes

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