fix issue #2617
simply adds the $_FILES array to profiler output of POST data
Merge pull request #2684 from slax0rr/develop

Added possibility clear out the cached variables from the Loader.
Changelog/doc edits following PR #2684
req. changes:
cleaned up conditionals
added changelog note regarding profiler
updated as per styleguide
Merge pull request #2661 from DaveMC08/feature/issue_2617

fix issue #2617