Fixed #1111: hpx::threads::get_thread_data always returns zero, added test
More work on mini ghost: fixing bugs with error calculation
Partially reverting accidently commited files
Starting to clean up mini ghost app
Fixing warnings, temporary work around msvc problems

Conflicts:
	examples/mini_ghost/stepper.cpp
Adding closed tickets to docs
Removing declaration of a function which does not exist anymore
Workaround for .then and launch policies result type issue
Removed temporary MSVC workaround