added math helper service + tests for it
first version time-based-spec
spectsettings now using windowSizeInSecs
auto update display of nrofsamples+fftN
started with cleanup (docs+var names)
large cleanup (var names+docs)
improving unit tests + more of them
EMUT (even more unit tests)
reindent
fixed e2e tests
Merge branch 'time-based-spec'