Fixes template names in blueprint definition

I have been experimenting a bit with the new kirby cms and especially your starter kit. I think there is a small typo in the blog's blueprint definition which causes the Panel to pick up the name of the default content type instead of the desired ones.

Furthermore this brings up a discussion about naming conventions. Will you provide suggestions for naming content types? E.g. should variations always be separated by a "." or "-"? I think providing a convention could aid in terms of portability (e.g. when switching the theme). 

Another aspect I wasn't quite sure about: Does it make sense to allow the user to create additional blog/search/feed *pages* in the Panel?