Issue #1682726 by crontab: ”Present login link on access denied (403)” didn't pre-select the current value.

Adding maintainer contact info to README; removing unnecessary PHP requirement; adding module package info

Issue #1209114 by ZeiP (=myself): Adding authmap functionality. Should work nicely side-by-side with the old username-based authentication, if authmap is not enabled in module settings.

Removing the unnecessary fieldset from config page; reformatting the code to Drupal standards; making messages translatable