Updated Data Files page UI elements - Multiple files can be be deleted
using checkboxes. Multiple files can be downloaded by checking
checkboxes against files to be included in the Zip file.
Added a button on the files page that rescans the files in the bag and
updates their metadata.
Merge branch 'dev' of local repository into dev-datafiles-ui
Merge branch 'dev' of local repository into dev-datafiles-ui
Changed column header "Expand" to "File Metadata"
Moved Fido classes from DcShared to DataCommons so the config info can
be included in DataCommons' properties file. Requires python.path and
fido.path to be added to datacommons.properties .