Theoretical reimplementation of tag with src re-insertion
Not writing the script if we already have one + don't clear out the body
Check for script earlier.

Also drop the hard tabs
Merge branch 'pjax-with-scripts' of git://github.com/sshirokov/jquery-pjax into sshirokov-pjax-with-scripts
Fix indention
Add script eval test
Only find scripts once
Extract executeScriptTags function
Scripts should be evaled async
Actually remove scripts from contents
More cleanup
Merge branch 'sshirokov-pjax-with-scripts'