Merge pull request #928 from sanger/next_release

Release 5.27.01
Merge pull request #931 from sanger/next_release

HiSeq X sequencing pipleines (low-throughput)
Delete 20141021111129_add_triggers_for_initial_volume_update.rb

We don't have sufficient permissions to create triggers. Triggers created manually.
[75883272] Adds validation of fragment size for x10 to 350
Merge branch 'production' of github.com:sanger/sequencescape into add_validation_for_x10_fragment_size
Rename Xten in seeds to X instead
[#75883272] Fragment sizes are strings not numbers

For some reason fragment sizes are stored as varchars
in the database.
Merge pull request #934 from JamesGlover/add_validation_for_x10_fragment_size

Add validation for x10 fragment size