closing #51. Added img_id and img_name in capcha helper

Signed-off-by: Preetham <me@preetham.in>
Removed img_name from captcha helper

Signed-off-by: Preetham <me@preetham.in>
removing extra spaces

Signed-off-by: Preetham <me@preetham.in>
Merge pull request #3393 from preems/develop

Added img_id to capcha helper

Close #51
Fix 'Array to string conversion' notice in CSRF validation

Rel: #3398
update