adds errorhandling for unreachable myExperiment, fixes #193
Fixed duplicate dominated set entries fixes #230
Allows configuring Taverna command, allows specifying working directory in command
Changes configuration to merge default, system and user config instead of replacing it
Cleaned up code, javadoc
Added catching exceptions in proceed step
Removed unused Java bean validator from PlanValidator
Removed storing measurement in Taverna evaluator if result could not be parsed fixes #239
Used challenge field in captcha validator fixes #240
Added null check in captcha validator. Added noscript warning to templates, IDP index. Fixes #225