dtdphi plotter

This patch allows the following dtdphi plot to be uploaded to gracedb page.
Example G-event pages:
MDC 3-ifo event (two dtdphi plots)
MDC 2-ifo event (one dtdphi plot)
MDC 1-ifo event (no dtdphi plot)

requested review from @kipp.cannon

assigned to @leo.tsukada

changed the description

added 1 commit

• 580505d1 - gstlal-inspiral/bin/gstlal_ll_inspiral_event_plotter : add comments

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changed the description

changed the description

added 2 commits

• 8ddbb8eb - gstlal-inspiral/bin/gstlal_ll_inspiral_event_plotter : add DTDPHI_PLOTS mode to upload dtdphi plot
• 37fe49c8 - gstlal-inspiral/python/dags/layers/inspiral.py : add DTDPHI_PLOTS mode to ll_plotter job layer

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added 5 commits

• c911ad0c - gstlal-inspiral/python/plots/dtdphi.py, Makefile.am : add a routine to create...
• 7a7b68f9 - gstlal-inspiral/bin/gstlal_ll_inspiral_event_plotter : add DTDPHI_PLOTS mode to upload dtdphi plot
• ce3e3daf - gstlal-inspiral/python/dags/layers/inspiral.py : add DTDPHI_PLOTS mode to ll_plotter job layer
• 75c1f094 - lvalert_helper.py : fix indexing in get_coinc_xmldoc
• 25fe88bc - gstlal_inspiral_lvalert_dtdphi_plotter, Makefile.am : added and registered

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added 1 commit

• 1507d527 - fix the format and error msg

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merged