Merge pull request #62 from sudiptpas/himanshu

Himanshu
dynamic validation added
Merge pull request #63 from sudiptpas/sujip

dynamic validation added
brand retrived via ajax
ajax for brand
n
Merge pull request #64 from sudiptpas/sujip

Sujip
some improvement
conflict resolved
Merge pull request #65 from sudiptpas/sujip

Sujip
validation
Merge pull request #66 from sudiptpas/sujip

validation
validation problem solved