start logging sessions logouts
add filter to completely skip the loading of a dropin

closes #34
remove old code
user session destroy fixes
user session copy and store user + text changes for 2.0.6
remove some code, update readme
Merge branch 'feature-sessions-destroy' into v2

* feature-sessions-destroy:
  remove some code, update readme
  user session copy and store user + text changes for 2.0.6
  user session destroy fixes
  remove old code
  add filter to completely skip the loading of a dropin
  start logging sessions logouts
update readme with info about dropin shortcut filter