Merge pull request #34 from g-rutter/master

Merge current PRIME backbone implementation
Removed erroneously added file
Fixed an error in the MSDOrientational plugin for zero times
Merge branch 'experimental' of marcusbannerman.co.uk:dynamo into experimental git push
Fixed the scaling of new lights added to the visualisation
Merge branch 'experimental' of marcusbannerman.co.uk:dynamo into experimental
Adding a VACF plugin and fixing a bug with adding lights
Forgot some files for the previous commit
Removed a compile warning
Added lennard-jones stepping to dynamod
Working on g(r) for stepped potentials
Added monitoring for the yr and gr functions
More work on the gr and yr functions
Added additional error/warning checks for misconfigured representative Interactions of Species
Fixed a bug in the IDPair implementation, and added additional error checking for XML output