Adding search functionality

To optimize by proper query usage
Optimizing search results

Modifying the query with ORs to optimize results and remove duplicates
Adding CORS to service calls
Adding CORS Headers to every response

*Also adding OPTIONS for all calls
Adding user signin check for search service call
Adding NoneType check for data

* checking for NoneType before stringifying data field
Optimizing search functionality

Now search method only searches for posts in groups which belongs to the user only.
Trying to get CORS running
adding logs to check form data - signup
Modifying form parameters for signup & signin

using uniform naming convntion for form param
email
password
verify
name
Merge branch 'dev'