Add processing of Interleaved events

[FrancaCassol]

This PR contains the following changes:

• Introduction of the new Component CalibrationCalculator which collects all calculations for extracting the calibration coefficients
• Processing of interleaved events inside the r0_to_dl1.py module and writing of the results in the DL1 h5 files inside the table /dl1/event/telescope/monitoring. The first table line contains the calibration read from the input calibration file. These initialisation values are used for all events till an interleaved calibration event is calculated. The calculation is steered with cards inside the list_standard_config.json file. If the requested statistic for interleaved events is put to a high value (e.g. 10000), it will be collected over the whole sub-run and the interleaved results will be written down at the end of the event loop. As a result, all events will be calibrated with the calibration run values and each h5 file will contain only one interleaved calibration event obtained with the full interleaved statistics of the sub-run (this is a provisory solution)
• Time flat-fielding is no more based on the time calibration file (which is updated each some months), but on the charge calibration file (which is updated each night)

[rlopezcoto]

Why is this PR not analyzed by Travis?
Also @FrancaCassol could you merge the master to solve the current conflict? Thanks

[FrancaCassol]

Hi @rlopezcoto ,
I am testing the code with the new model MC data. I will do soon some further commit with corrections

[codecov]

Codecov Report

Merging #358 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #358   +/-   ##
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  Coverage   45.47%   45.47%           
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  Files          64       64           
  Lines        4723     4723           
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  Hits         2148     2148           
  Misses       2575     2575           

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[FrancaCassol]

@rlopezcoto for me this PR is ok

[rlopezcoto]

@rlopezcoto for me this PR is ok

Ok, it is important to move on with this PR for people to test and adapt cleaning and so on. I'd say that after addressing the few last minor comments, we can approve and merge it