Tweaking permissions for file-uploads.
point composer to php5.3 compatible versions, plus some syntax fixes for 5.3 compatibility
Merge pull request #1309 from rossriley/upload-fixes

Some fixes for compatibility with PHP 5.3 which was neglected in the original PR
Merge branch 'configuration-checker' of github.com:rossriley/bolt into rossriley-configuration-checker
Merge branch 'rossriley-configuration-checker'
Tweaking the check for PHP 5.3.3. See #1300.