* Cleaned up .gitignore a little bit

* Added a .gitignore to modules, ignoring all non-tracked modules.

* Fix internal markdown links in the install docs

Might not be complete, needs check with current G Suite interfaces.
But improves on the current situation.

* Add an extra apache access control directive
  to make it work with newer Apaches
  Source: http://stackoverflow.com/questions/23337446/getting-a-403-forbidden-error-for-simplesaml-after-apache-upgrade

Change the extension of the documentation files from .txt to .md so that they can processed as markdown and displayed in github.

Update the documentation. Trailing slashes are no longer required for 'baseurlpath'. This resolves #363.

* Remove 404 link to SSP news; this is covered on simplesamlphp.org now.
* Make screenshots link relative, so docs don't trigger insecure
  content warnings.
* Compress png images.

SimpleSAMLphp no longer requires mcrypt, it will only be needed depending on the configuration, so mark it as optional.

This is more than just cosmetics, as the rnd.feide.no links redirect
people to the SSP 1.5 documentation which is rather outdated.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@3391 44740490-163a-0410-bde0-09ae8108e29a

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@3333 44740490-163a-0410-bde0-09ae8108e29a

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@3296 44740490-163a-0410-bde0-09ae8108e29a

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@3239 44740490-163a-0410-bde0-09ae8108e29a

It turns out that we are now always requiring the mcrypt module, so
mark it as required.

Thanks to Onivaldo Rosa Junior for reporting this bug!

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@3203 44740490-163a-0410-bde0-09ae8108e29a

Thanks to Dick Visser for writing this document.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@3075 44740490-163a-0410-bde0-09ae8108e29a

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2319 44740490-163a-0410-bde0-09ae8108e29a

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2209 44740490-163a-0410-bde0-09ae8108e29a

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2207 44740490-163a-0410-bde0-09ae8108e29a

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2206 44740490-163a-0410-bde0-09ae8108e29a

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2117 44740490-163a-0410-bde0-09ae8108e29a

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2076 44740490-163a-0410-bde0-09ae8108e29a