print config to file under logs/
make magnitud of simulated sine waves more similar to each other to facilitate inspection, in particular regarding the (apparantely wrong) rendering of fill_values in the UI
ion_loader: TESTED_DOC: use copy of updated master with correct Input_voltage parameter for platform_eng_parsed param dict; also adjusted monitoring rates for the various attributes in the PlatformAgentInstance sheet.
dispatch of granule publication completely revised and implemented according to https://confluence.oceanobservatories.org/display/CIDev/Platform+attribute+monitoring+and+granule+construction
merge upstream/master
Merge pull request #738 from carueda/platform_multi_param_granule

Platform multi param granule construction and publication
Adds new field to parameter context: precision