Fixed linked libs for win32
Closes #948
Closes #843

Added bootstrap_windows.sh script to download and compile dependencies
Adapted install_libfilteraudio.sh to windows platform and added to linked libs
Changed opencv includes to include only needed parts (makes it work on windows)
Fixed warning in timer_win.cpp
Tray icon notification of new messages
Removed explanations from tray menu
Status menu contained in contact list
Autorun on OS startup
Setting to show window on new message
Setting to always notify in group chats
Check for mentioned name only triggers if name is not in the middle of other word.
Cleaned up general settings form.