Added ignore lines starting with specific characters to group tool
Merge from stable
Fixed XML versioning and inputfile name
Rework logic for setting selection of DataToolParameter. Fixes issue seen with rerun where incorrect options were selected.
History published/shared/display as slug: use annotated-history-panel, search open by default, preserve whitespace in annotations, replace import button with 'switch to' if owned by user viewing; Annotated History Panel: panel view of history that shows datasets as a table with additional dataset info in a left cell
Merged in clayton_turner/galaxy-central (pull request #322)

Added "ignore lines starting with specific characters" to group tool