Merge pull request #70 from sunithamisra/master

Aditional commits to add BE metadata info from reports.xml
Merge pull request #71 from sunithamisra/master

Shell error while running "run all" fixed
Updated permissions
Updated bc_graph to use OO framework rather than pylab
Added fmount to env folder
Merge branch 'master' of https://github.com/sunithamisra/bitcurator into sunithamisra-master
Merge branch 'master' of https://github.com/sunithamisra/bitcurator into sunithamisra-master
Merge branch 'master' of https://github.com/sunithamisra/bitcurator into sunithamisra-master
Minor label update
Updated fiwalk command in bc_reports_tab
Updated fiwalk command in bc_reports_tab
Fixed path issue in disk_access
Label cleanup
Update README.md
dfxml file generated by fiwal is moved to a hidden directory ~userhome/.bcfa
A combination of filename and inode is used to key/hash into the QstandardItem/
QTreeView structure in order to make this key unique