Minor fixes for grasp memory

See merge request ArmarX/RobotAPI!223

Improve armem prediction interface

Closes #99

See merge request ArmarX/RobotAPI!244

Revise Predictive: Split into Predictive (base, no children) and PredictiveContainer (with children)

Make ProviderSegment a Predictive, others a PredictiveContainer.
Remove non-const ref access to underlying container

armem/dev

See merge request ArmarX/RobotAPI!235

# Conflicts:
#	source/RobotAPI/components/armem/server/ObjectMemory/ObjectMemory.cpp

Add Prediction Interface and linear position prediction model to Object Memory

Closes #96 and #91

See merge request ArmarX/RobotAPI!242

Also move generic templates into detail namespace.

Turns out std::stringstreams can't be copied, so you can't use them in
containers.

Resolve "New Hardwareconfig"

Closes #87

See merge request ArmarX/RobotAPI!229