Add context for Pages

[frankiejarrett]

Page actions should be added as a core context of the Stream plugin.

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[shadyvb]

@fjarrett I believe this is integrated into the posts connector we already have, and i don't think making that connector ( posts ) manage posts [post_type=post] only is a good thing, now that everybody is using custom post types.

[frankiejarrett]

@shadyvb Yes, you're right. Perhaps the connector should be "Posts" and the context should always be the post_type label (e.g. Posts, Pages, My Custom Posts, etc.)

[frankiejarrett]

@shadyvb Nicely done! But we should also update the summary to use the post type's singular label.

For instance, this summary should say download instead of post:

[shadyvb]

@fjarrett Fixed in 87caf70

[frankiejarrett]

Looks great