tablet fixes

Fixed bugs preventing demo "CopyShapes" being run
Added CentreOut sample experiment

Added files for generating and running the "CentreOut" tablet
experiment, and a set of sample data
Expanded DAQ card support to include analog input

Including a class for force sensors, and renamed @MCtrigger to @MCDAQ
Added new stimuli types

@circlestimulus,, @rectanglestimulus (To provide real time feedback,
e.g.  of force or movement) and @textArraystimulus (for perceptual
decision making tasks)
Bug fix to close log files
Assorted enhancements

Expanded buttonPress to make options explicitly setable
Changed runcommand in all relevant classes to return changed parameters
and their values
Allow option to finish trial when button is pressed
convenience script to run a server for force sensors
Included new showPosition types for @tablet
Documentation update, and new response type

(@fingerOppositionSequence)
Merge branch 'master' of https://github.com/JasonFriedman/RepeatedMeasures

Conflicts:
	docs/protocolDocumentation/index.html