bug fix
Merge branch 'openmw-29' of https://github.com/zinnschlag/openmw.git into AIFix2
add AIfollow to summoned creatures
fix
Merge branch 'master' of https://github.com/OpenMW/openmw.git into AIFix2

Conflicts:
	apps/openmw/mwmechanics/aifollow.cpp
compile fix.
keep track of active cells in PagedWorldspaceWidget and update SubView title accordingly
Per-cell pathgrid data and calculation moved off PathFinder.  Now the edge cost calculations and strongly connected component searches are done only once per cell.  Per-actor data and methods still remain with PathFinder.

This version still has debugging statements and needs cleaning up.
fixed scene toolbar layout problems
Cleanup debug statements.
size adjustment
Make Travis happy.
added grid tool (does not work yet)
Move PathgridGraph into separate files.
Remove logging.
Remove redundant parameter from aStarSearch.  Also update some comments.
One more comment fix.
increased scene toolbar button size
Merge remote-tracking branch 'gus/AIFix2'
Fix visual glitch happening when closing inventory while sneaking

(bug #1255)