Ensure memote-style tests work with most of the recognized namespaces by default

[stelmo]

Many of the config structs have dictionaries like

Dict(
        "trp__L" => "trp__L_c", 
        "cys__L" => "cys__L_c",
...
)

that map standard ids to namespace specific ids (in this case bigg). Change this to something like

Dict(
        "trp__L" => ["trp__L_c", "MNXM741553", "chebi:57912", ...], 
...
)

and modify the checking functions to make the default behavior more robust.