Text parsing for p-values

[jwildfire]

0.00 -> <0.01
1.00 -> >0.99

Test notes

• Select Aminotransferase, alanine (ALT) (pkat/L) from the Measure dropdown.
• Verify in the main chart the p-value is formatted with a less than sign.
• Verify in the Treatment B grouped histogram the p-value is formatted with a greater than sign.