Partial implementation of the pdf worksheet.
added source and destination plates on pdf
privatised methods
added POD
Remove debugging statements and restore overridden refactorisation
beautification
remove left over
adding a file uploader role
pod for request.pm
clean up
pod update
calming down critics
Change file update
Merge pull request #74 from benoitmangili/worksheet

Worksheet
Got all the test fixtures
Started the refactoring of bed verification
Refactored bed verification.

Added a load of tests for it too
Added the deleted cached dir back in
Merge pull request #75 from jbeast/bed_verification_tests

Bed verification tests
adding texan file