Fix - Education Level in class.js

See merge request !46

Add convert booleanVariable.js

See merge request !45

Feature multiple where

See merge request !44

Implementation of multiple where, that has tableField and fild as a array, 'where' contain the fild 'condition' as a condition (ex.: AND, OR)  of where

Integral time treatment

See merge request !43

Add filter integral time in class.js

See merge request !41

Classroom route fix

See merge request !40