check history.xml for ed, not sipnet.out
re-enable printing of date of ed simulation
converted workflow.R into r script.
tweaks to running pages.
sort history
fix listing of files and outputs.
add parent to dbfile.input.{insert,check}
generate variable file for web in model2netcdf
enable login for pecan #100

Big clean up of web interface CSS
Added PEcAn sponsor information
Merge branch 'master' of https://github.com/PecanProject/pecan