OpenCellIdActivity: Add handlers for other HTTP requests

Created by: SecUpwN

We need to add handlers and a for the other HTTP request and OCID Server error codes:

     *      1   200     Cell not found
     *      2   401     Invalid API key
     *      3   400     Invalid input data
     *      4   403     Your API key must be white listed in order to run this operation
     *      5   500     Internal server error
     *      6   503     Too many requests. Try later again
     *      7   429     Daily limit 1000 requests exceeded for your API key.

When added, we also need a toast for every server response code/message to display to the user.

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