Added lots of new parameters, files, hooks, to the sedflux2d component.
Fixed some bad parameter names in child.in template.
Changed to use new find_simulation_input_file function.
Fixed start of header tag.
Added title argument to status.html template.
Added new command models/validate to validate a model JSON.
Added better error reporting for stage command.
Merge branch 'master' of https://github.com/csdms/wmt