Added Helper functions
Merge branch 'development' of github.com:flexiblepower/fpai-core into efi_utils

Conflicts:
	flexiblepower.api.efi.utils/src/org/flexiblepower/api/efi/bufferhelper/BufferActuator.java
	flexiblepower.api.efi/src/org/flexiblepower/efi/buffer/Transition.java
Fixed some build errors.
Added helper methods for agents (fill fraction)