Add validation code for integers

previously, all numbers were treated the same. Now, the number validation code
can validate integers differently than decimals (good for the percents on the
dietary questions page and the height/weight on survey1.psp)
Fixing Typos

Used False instead of false in javascript
Merge branch 'fix_validate_number' of github.com:adamrp/qiime_web_app into fix_validate_number

Conflicts:
	www/americangut/animal_survey.psp
	www/americangut/survey3.psp