Add documentation to ITBFatalityFunction.
Tidy up gen_rst_script.py
Documentation.
Merge remote-tracking branch 'origin/master' into update_doc
Update documentation for inundation impact function.
Update doc for volcano and Pager eq function.
Update rst for impact functions.
Update documentation for impact functions.
Merge branch 'master', remote-tracking branch 'origin' into update_doc
Merge branch 'update_doc'
Little fix in pager eq  documentation.
chmod on gen_impfunc_doc.py
make docs.
Merge remote-tracking branch 'origin/master'