introducing new preferences dialog
moved calendar export function to menu
moved number correction options to preference dialog
simplified userinterface
split contact and appointments sync (can be activated in Userinterface class)
fix for hiding tray menu when focus is lost
declare fields final
added 'singlerun' command line argument
make static fields to member fields
contact folder listing now working, still unused
default Outlook contact folder id as static field
added components for Outlook contact folder selection (not used yet)
method to get Outlook contact folder should work now
method to show Outlook contact folders for selection (unfinished)
reduced sleep time before opening outlook
list of Outlook Contact folders shown in UI (but value is not used yet)
use always default calendar for finding subfolders
default outlook calendar forlder id as static field
Outlook class inheritance cleanup
outlook contact folder value saved/read with config