Experimental data frame numbers are over-specified

[stvdwtt]

Currently we have a log of all of the frames to be assimilated and separately have input file entries for first frame (optional, default=0) and the last frame (mandatory). We've had a few times during experiments when we were confused that adamantine stopped assimilating frames.

I think that the log file should be the place where we specify which frames we want to assimilate.

I see two options for fixing this:

1. Remove the first frame and last frame options entirely.
2. Make the last frame optional and make std::numeric_limits<unsigned int>::max() the default.

@Rombur, do you have a preference?

[Rombur]

Let's just remove these options. We have too many inputs...