Fixing image asset paths for recently imported blog posts

- Fixes 598
Only send PD alerts after two consecutive failures.
Adding new pages for developer+ launch

- Fixes #660
- Fixes #652
--amend
wording, additional questions
Removing TM symbol on developer+ after first usage on page.
Fixing typo.
Reworking signup buttons
Disabling UK Signup
Adding UK signup url
Making "developer+" lowercase for consistency.
Update index.html

Replacing unicode chars for html entity equivalents.
Fixed first para of FAQ.
my suggestions for fa
Fixing typo in redirect.
Merge pull request #695 from ycombinator/fixing-bad-redirect

Fixing typo in redirect.
Merge pull request #696 from rackerlabs/dev

Pushing to production after reviewing on staging
Updating copy of signup

Per Drew Hicks:

"from Fanatical Support®." -> "from the Fanatical Support® company."
Fixing more and youtube in blog post

- fixes #698
Merge pull request #699 from rackerlabs/gh-698

Fixing more and youtube in blog post