fix(template): fix checking for disabled attribute for select template
fix(template): fix checking for disabled attribute for select template

fix checking for disabled attribute for select template by binding disabled attribute to

templateOption.disabled

#75

formly-js/ng2-formly,formly-js/ng-formly,formly-js/ng2-formly,ngx-formly/ngx-formly,Riron/ng2-formly,formly-js/ng2-formly,Riron/ng2-formly,ngx-formly/ngx-formly,Riron/ng2-formly,formly-js/ng-formly,ngx-formly/ngx-formly,ngx-formly/ngx-formly