Fixed NPE when content fetched does not return an encoding
Added a stage that adds a static action
Added a stage that splits a string on a given regex and returns a list
Adds tests for SplitStage and an option to fail or ignore when the field is missing
Adds fallback encoding configuration parameter for SimpleHttpFetchingStage
Lowers logging level of SplitStage missing field
DRY
Merge pull request #346 from ssimon/0.4.x

Added a split stage, a static action stage and secured the SimpleHttpFetchingStage to handle entities without specified encoding