Create decimal drop down

[micahwoodard]

fixes #148

• removes string and number from options
• adds decimal option
• add regex so only decimals are allowed

[micahwoodard]

Hi Helen I've changed the schemaHandler so it deals with decimals. It saves as a string now and also complains if you have a letters in the text box. The error message isn't super descriptive though and also I haven't made any unit tests for this. Let me know if you think this is the right approach or you were thinking of something else!

[micahwoodard]

I've also been trying to create a custom textbox widget that will only allow you to input numeric and decimal values. Still working on the right regular expression though

[micahwoodard]

Okay regular expression fixed so only numerical or decimal values allowed