Requested updates to sample spec data in extraction plate

[steierj]

• separate the field for "Concentration and Purity" into two fields (this is currently one field)
• Change "date" to "Extraction Date"
• add "Purity Quantification Date" field (the date on which an extraction purity was quantified)
• add "Concentration Quantification Date" field (the date on which an extraction concentration was quantified)
• add "Purity Quantification Method" field (the method by which an extraction purity was quantified)
• add "Concentration Quantification Method" field (the method by which an extraction was quantified)
• come up with list of quantification methods (group to provide this list)
• add ability to bulk add concentration as well as purity values based on Plate Well via text file (same method as adding 2D barcodes to the extraction plate under "Bulk Edit" when looking at extraction plates in Biocode LIMS)

[jdeck88]

Updating these values requires a modification to the Mysql Extraction Table to add the new values requested,
requiring a more fundamental update to the LIMS system. That is, any LIMS system that uses the current
Biocode plugin, would need to have the Mysql tables updated on their backend. I've avoided any database updates
here as it is a fundamentally larger change impacting multiple LIMS systems.... Need to discuss this.

[jdeck88]

Decided on Nov 13th call that most of these functions will be pushed to a future release.
Creating a new issue for bulk add concentrations to #141