added a function to return the default account reminder email subject and body text to be
used in the settings page and for mail messages when there is no user defined default.
collapsed two if clauses into a single OR clause in account_reminder_cron().
#486308 Add a configurable cron limit for how many messages to process on every cron run.
change placeholder for watchdog message to %.

and body to change % placeholders to ! placeholders per http://api.drupal.org/api/function/t/5

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