ENH Update folders + namespaces, remove unused class

[emteknetnz]

Issue #42

[bergice]

Causes a fatal error if there are LoginSessions existing already before applying this as it's processing them in the middleware: [Emergency] Uncaught SilverStripe\ORM\ValidationException: Object is of class 'SilverStripe\SessionManager\Model\LoginSession' which doesn't exist - you need to change the ClassName before you can write it.
Might be okay if no one is using the module yet.

After removing LoginSessions from the database, I'm getting this error: [Emergency] Uncaught Error: Call to undefined method SilverStripe\Security\RememberLoginHash::setLogoutAcrossDevices(). Not sure why this method is gone.
Seems like it should now be RememberLoginHash::config()->update('logout_across_devices', false);

[emteknetnz]

@bergice you probably need to run composer update - basically you want to be runing 4.8 on your local - there was new API added to framework RememberLoginHash::setLogoutAcrossDevices() and the requirement withing session-manager was bumped to "silverstripe/framework": "^4.8",

The new API was added specifically so we did not run RememberLoginHash::config()->update('logout_across_devices', false) which is messy as you're changing a framework config directly from a satellite module

[maxime-rainville]

@emteknetnz @bergice Changing this class from LeftAndMain to Controller completely nukes the functionality. I understand this is a big PR, but you should at least try to run these things before merging them.

[maxime-rainville]

I'll fix it through #67

[maxime-rainville]

Sorry, it was my screw up. I change something else on my set up ... just ignore me.