Forbid paths in “Save as...” dialog box
On saving to file from the Web UI, one can input a path instead of a filename, which may fail... or not, if the parent path actually exists.
For example, if one opens a tracking data file in directory a/b and requests some labels to be saved as c/d.label, if directory a/b/c does not exist, LT.jl fails with message:
┌ Warning: error while processing received msg
│ exception =
│ SystemError: opening file "a/b/c/d.label": No such file or directory
│ Stacktrace:
│ [1] systemerror(p::String, errno::Int32; extrainfo::Nothing)
│ @ Base ./error.jl:176
│ ...
└ @ Bonito ~/.julia/packages/Bonito/BbLUm/src/types.jl:25An error is expected instead, including when directory a/b/c exists.