Debounce post settings events

fixes #1582
Fix typo?
backbonejs model conflict with connect-slashes

close #1648
- backbonejs model doesn't include tailing slash by default
- connect-slashes returns 301 for GET without tailing slash
- overwrote backbone model url method to include tailing slash
Update config.theme() after every settings edit

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
Change message when unsupported node version is used

no issue
- changed ‚the latest‘ to ‚a supported‘

Reason: the user is asked to update to the **latest** version of
node.js when v0.11.* is installed but v0.10.* is required
Bug fixes for partial views

closes #1203
- Update express-hbs module to the new version (0.5.2)
- Use two instance of hbs one for the theme and an other for the admin
- Template helpers are register as partial view
- Partial views of the theme are reload when the theme changed

Remove clear partial cache in handlebars

This code will be move in `express-hbs`.
This doesn't cause a problem to remove this line but it is not clean.

Remove unused hbs instance

Resolve conflict
Fixed admin 404 page broken image refrence
Standardize file path access throughout ghost

resolves #1390

update all string based references to file paths
to use the ./core/server/config/paths file
so that it is the single source of truth
CSS and layout fixes for image uploader

closes #1673
- dropzone icon doesn't appear when filestorage is false
- proper cursor and no selection on icon
- cleaned up some sass
Improve Helpers

closes #1640
closes #1672
- changed to include config using require
- deleted has_tag helper
- deleted json helper
- removed fileStorage and ghostScriptTags helpers from frontend
- added fileStorage and url helper to admin
Add Force SSL Configuration/Middleware

Solves #1300
- Adds forceAdminSSL bool config value
- Adds checkSSL middleware
- Adds redirectSSL helper function
Bug fixes, undefined should not be a string
CasperJS waitForOpaque fails more gracefully
Fix 'dbHash' not found

closes #1685
- changed dbHash initialization from db direct access to api access
- added dbHash to default-settings.json
- added dbHash to tests
Update default fixture to give better direction

closes #1561
- altered perspective of intro paragraph to reading from the blog
instead of from the content page
- added copy directing users to sign in to the admin area at /ghost/ and
edit the post before reading the 'Getting Started' section
- this should give the Markdown lessons better context and avoid users
getting confused as to what 'the left hand panel of Ghost' is
Remove fixed scheme from gravatar url

no issue
- removed scheme from gravatar url

Reason:
Gravatar supports ssl and the fixed scheme will cause ‚insecure
content‘ warnings.
Switch from multipart to busboy

Fixes #1227

- Removed deprecated `multipart` references.
- Setup `busboy` to pass along file streams and do a naive parse of form
values.
- Updated logic in file storage and db import to handle file streams
instead of the temporary files created by `multipart`.
Simplify "Working on Core" setup instructions
Update Ghost logo image fixture
Package.json: Incorrect node version fix.