refactor(QADB): upgrade normalized-yield timelines

[c-dilks]

This is the first QADB timeline to be refactored from the qa-physics/ code into the src/ code. It will pave the way for how to do the rest.

We will not get rid of the old QADB timeline production code, until everything is refactored.

For qtl histograms:

• --focus-detectors will now additionally fill the new QADB histograms; if there are no scalers in the input file, a warning will just be printed (chefs may notify us devs if it happens, but this should not impact calibration timeline production)
• developers may use the new option --focus-qadb for rapid testing, which will only fill the new QADB histograms

For qtl analysis:

• if the QADB histograms were produced by qtl histogram, the new QADB timelines will also be produced; if not, a 'debug' message will be printed to stdout
• developers may use the option -t qadb to restrict qtl analysis to the new QADB timelines only, for more rapid testing

[c-dilks]

no diffs between timelines produced by this new code and from those from the old code

[c-dilks]

All right, I'm happy enough with this.

@Sangbaek, this is the beginning of a grand refactor of all the QADB production code from the qa-physics/ directory. Could you review the changes, in particular to higher-level parts of the code such as

• run_histograms.java
• run_analysis.groovy

Don't worry about all the newly added histogramming Java classes and analysis Groovy classes (in the new qadb/ subdirectories); I've cross checked the resulting timelines with the old ones, and there are no diffs.