Subject: Updated Register page and solve the problem of Submit question

Description:
1. Added fields in user_profile table like dob, netbook_no ..
2. Populate all the category in the category table.
3. migrate all fields to aakashuser.user_profile table.
4. modified category coloumn constaint, string limit to 40.
5. added "bootstrap_datepicker" css and js for dob and validation.
6. also added python bootstrap-datepicker module (yet not used).
7. UI changes in register and profile image,ask question page.
8. README.rst updated.
9. Submit Query working.