Omandtc 58

1. I decided to use new bootstrap validation library (http://bootstrapvalidator.com)
    instead of old (http://1000hz.github.io/bootstrap-validator/) because the new library has more useful features which I need to use (checkboxes and radio-buttons validators, etc) 
2. Datepicker popover now closes after date is selected
3. Fixed file upload validation
4. Fixed checkboxes and radio-buttons validation