Changed 'Device' to 'Plate' in Assay Plate Results and Readouts.
Changed PlateID /Barcode to Raw_ID field in Assay Plate Readout
Reorganized the Assays section of the Admin Home Screen
Changed Chip Study Start DateTime to Date.  We do not need the time field.
Added hint to format of Date.
Added divider for Study ID
Made default conc unit 'uM'
Merge pull request #246 from UPDDI/Issue-#240

Issue #240
Rectify ID for date field in study ID builder
Merge branch 'master' into stage