most of the code for creating/printing labels with tests and test data
printing section added to teh config file; getting printer url added and tested
tests for getting container info; code for data manipulation
Removed Encode module from Build.PL as not used

Added date_received module

Added date received test

Refactored epp scripts a little

Moved some xml element creation into a moose utility role.

Added some POD for clarity_elements
Added DateTime module to Build.PL
length option for signature module; code fixes and tests for label creating; correct label formatting fro a plate
barcode generation with two char prefix; barcode module clean-up; generation of short  capital letter signatures; barcode prefix supplied for barcode generation; trim user name if toolong
Merge pull request #19 from jbeast/date_received

Date Received task
Merge branch 'devel' of github.com:wtsi-clarity/wtsi_clarity into devel
build file and changes update
Merge pull request #20 from mgcam/devel

label generation and printing
Merge pull request #21 from wtsi-clarity/devel

Merge Devel into Master