user access record to user login record for test.

added settings form validation function.

#134857 & #123962 should be fixed with change in table schema.
Removed unneeded indexes.

#134857 & #123962 should be fixed with change in table schema.
Removed unneeded indexes.
Drupal coding standards changes.
Wrapped bulk of module strings in t() functions.

New feature added to allow users to opt out of revieving account reminder emails