fixes#1749
- pass config().url into theme.update
- rename paths functions to match theme function
- adds tests for theme config
- We should probably try to eliminate passing config.url around
fixes#1645
- removes server.get('ghost root') as it is only an alias
to config.paths().path, and adds unnecessary indirection
- removes config.theme().path as its just an alias to
config.paths().path, updated all relevant references
- update config.theme.update to only require the api/settings object,
and no longer need the config object
- modify api/settings.edit to call config.theme.update so that
the themeObject is ready for next rendering of template
covers 90% of #755
- moved ghost.settings to api.settings
- moved ghost.notifications to api.notifications
- split up api/index.js to notifications.js, posts.js, settings.js,
tags.js and users.js
- added instance.globals as temp workaround for blogglobals (Known
issue: blog title and blog description are updated after restart only)
- added webroot to config() to remove `var root = ...`
- changed `e` and `url` helper to async
- updated tests
