add legacy_gateway process information
add code for creation of legacy_gateway process
remove legacy_gateway process from list of process types users can pick when creating plate
remove legacy_gateway process from plate upload
add tests for creating legacy_gateway process
make design phase optional
Merge branch 'master' into devel
v0.057

    Make phase optional on a design
    Add legacy_gateway process type
Merge branch 'devel'
    Make phase optional on a design
    Add legacy_gateway process type