removing clear costmaps recovery as move base seems to not be robust in terms of costmap reloading
adding simple "pause and the rety nav" recovery state
Merge branch 'hydro-devel' of https://github.com/strands-project/strands_recovery_behaviours into hydro-devel
Changing help speech to explicitely tell people to look to the robot's screen
Merge pull request #31 from BFALacerda/hydro-devel

nav recovery improvements