Started to work on #704: Create performance counter to expose thread queue waiting time
Working on #705: Create rolling average and median aggregating performance counters
Adding worker library to a solution folder
Fixing issue that get_thread_count(unknown) did not account for pending task descriptions
Doc update
Partially reverting 337639b0609100d3e68152aa5a3bb1c6430d1a29, trying different solution. Additionally, this is a fix for #707: Many examples do not link with Git HEAD version
Doc additions
Fixes #708.
Partially revert e09aba36765887fef1b7da72648e3ee2314256dc. Fix #696: Distributed problem
Fix #705: Create rolling average and median aggregating performance counters
Merge branch 'fixing_705'
Adding closed ticket to docs
Fix #704: Create performance counter to expose thread queue waiting time
Fix #709: Add new threadstate 'staged' referring to task descriptions
Error message cosmetics
Adding new counters to documentation
Fixing new performance counter docs
Adding support for wait time performance counters to all schedulers
More doc updates
Merge branch 'fixing_704'

Conflicts:
	hpx/runtime/threads/policies/thread_queue.hpp
	src/performance_counters/registry.cpp
Fixing unit of measure for new counters