threading model, playback speed, closing
merged in develop
Fix layout bug
Update dockwidget menu
Fixing layout bug
Removed resizeevent stuff to fix layout issues. Now layout works well
Add a plugin example in /plugin folder
Add plugin menu in and manageplugin() in gripmainwindow. Need more work
Add FindEigen.cmake
put time display in playback widget. changed last load filename. formatted
documentation, formatting, removed build warnings
Cleanup and add comments
Merge branch 'develop' of https://github.com/golems/grip2 into develop
Merge branch 'develop' into slohia

Conflicts:
	include/GripMainWindow.h
	qtWidgets/GripTab.h
	qtWidgets/src/TreeView.cpp
	qtWidgets/ui/TimeDisplay.ui
	src/GripMainWindow.cpp