Changed 'default' and 'html5' templates to use 'current_page.data.title' instead of 'data.page.title'
Related to middleman/middleman-blog#107
Merge pull request #825 from michaelbaudino/change-default-and-html5-templates-to-use-current_page.data.title

Changed 'default' and 'html5' templates to use 'current_page.data.title' instead of 'data.page.title'
bump tilt requirement, unregister plaintext template. fixes #824
looser test deps