don't remove the installed.txt file
fix the getUrlForExtraId function
allow blocks to have an edit_url as data too.

If a block has an edit_url in it's data, it will be now used.
Merge pull request #451 from WouterSioen/patch-6

don't remove the installed.txt file
add anchor to url
add anchor to action via action file
API: add proper response upon trying to login with a non-existing account
Bugfix: Used correct path for checking if Fork is installed.
Minify is now installed with Composer
Bump Minify version number
Preparing for release.
Removed "Thx to XYZ from CHANGELOG.md"

* Changelog is for announcing changes
* Attributions are in git log, or even at https://github.com/forkcms/forkcms/contributors
* The most active contributors were not even mentionned
remove references and comments copied from the blog module
Method to get the token

The token will be generated if it doesn't exist.
Include the token in the url
Added a method that will check the token.

If the token is invalid we will just stop the script.
Check the token for actions that are based on add/edit/delete
Grab the token from the session.

Otherwise the token will be different each request, will render each
action useless.
Updated changelog
Remove the csfr-token from the session