HTML navigation bars

[alurban]

This PR introduces a general-purpose bootstrap navbar constructor, originally designed for gwsumm. The following changes are included:

• Introduce a few new functions, including gwdetchar.io.html.navbar
• Use this to give navbars to the output of every script, including omega scans
• Move dropdown menu style settings into CSS
• Include unit tests

Test output is available here (all require LIGO.ORG credentials):

Tool	Output	Notes
gwdetchar-omega	Link	Network scan of GW170817, just to check that the page looks similar
gwdetchar-scattering	Link	L1 scattering on 2019-04-13, full L1 omega scans within
gwdetchar-overflow	Link	L1 DAC overflows on 2019-04-13
gwdetchar-software-saturations	Link	L1 software saturations on 2019-04-13
gwdetchar-lasso-correlation	Link	L1 Lasso run from one of the lock stretches on 2019-04-13

This fixes #288.

cc @duncanmmacleod

[codecov-io]

Codecov Report

Merging #304 into master will decrease coverage by 0.82%.
The diff coverage is 84.38%.

@@            Coverage Diff             @@
##           master     #304      +/-   ##
==========================================
- Coverage   95.53%   94.71%   -0.82%     
==========================================
  Files          21       21              
  Lines        1522     1569      +47     
==========================================
+ Hits         1454     1486      +32     
- Misses         68       83      +15

Flag	Coverage Δ
#Linux	94.71% <84.38%> (-0.82%)	⬇️
#python27	94.39% <84.38%> (-0.81%)	⬇️
#python35	94.01% <84.38%> (-0.8%)	⬇️
#python36	94.14% <84.38%> (-0.8%)	⬇️
#python37	94.07% <84.38%> (-0.8%)	⬇️

Impacted Files	Coverage Δ
gwdetchar/omega/html.py	95.04% <100%> (-0.46%)	⬇️
gwdetchar/io/html.py	94.93% <79.73%> (-3.31%)	⬇️

---

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[codecov-io]

Codecov Report

Merging #304 into master will decrease coverage by 0.82%.
The diff coverage is 84.38%.

@@            Coverage Diff             @@
##           master     #304      +/-   ##
==========================================
- Coverage   95.53%   94.71%   -0.82%     
==========================================
  Files          21       21              
  Lines        1522     1569      +47     
==========================================
+ Hits         1454     1486      +32     
- Misses         68       83      +15

Flag	Coverage Δ
#Linux	94.71% <84.38%> (-0.82%)	⬇️
#python27	94.39% <84.38%> (-0.81%)	⬇️
#python35	94.01% <84.38%> (-0.8%)	⬇️
#python36	94.14% <84.38%> (-0.8%)	⬇️
#python37	94.07% <84.38%> (-0.8%)	⬇️

Impacted Files	Coverage Δ
gwdetchar/omega/html.py	95.04% <100%> (-0.46%)	⬇️
gwdetchar/io/html.py	94.93% <79.73%> (-3.31%)	⬇️

---

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Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[codecov-io]

Codecov Report

Merging #304 into master will increase coverage by 0.03%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #304      +/-   ##
==========================================
+ Coverage   95.67%   95.69%   +0.03%     
==========================================
  Files          23       21       -2     
  Lines        1569     1579      +10     
==========================================
+ Hits         1501     1511      +10     
  Misses         68       68

Flag	Coverage Δ
#Linux	95.69% <100%> (+0.03%)	⬆️
#python27	95.38% <100%> (+0.03%)	⬆️
#python35	95% <100%> (+0.16%)	⬆️
#python36	95.12% <100%> (+0.16%)	⬆️
#python37	95.06% <100%> (+0.16%)	⬆️

Impacted Files	Coverage Δ
gwdetchar/omega/html.py	94.63% <100%> (-0.87%)	⬇️
gwdetchar/io/html.py	98.65% <100%> (+0.4%)	⬆️
gwdetchar/io/datafind.py	96.15% <0%> (-0.27%)	⬇️
gwdetchar/lasso/plot.py	100% <0%> (ø)	⬆️
gwdetchar/scattering/plot.py
gwdetchar/scattering/__init__.py
gwdetchar/scattering/core.py
gwdetchar/scattering.py	100% <0%> (ø)

---

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[duncanmmacleod]

@alurban, how do the new scattering, overflow, and software-saturations pages look when embedded inside the summary pages?

[alurban]

@duncanmmacleod, in this example, the scattering navbar overtakes the summary page navbar. I think we can handle this in the summary page config files downstream, I'll look into it after lunch.

[alurban]

@duncanmmacleod, I was right, you can remove the header and footer sections using a fancy regular expression in javascript:

var x = data.indexOf('<body');
x = data.indexOf('>', x);
var y = data.lastIndexOf('</body>');
var content = data.slice(x+1, y);
content = content.replace(/(<header.[^]*header>)/g, "");
content = content.replace(/(<footer.[^]*footer>)/g, "");

The summary pages will then wrap their own navbar and footer around this, as the same example linked to above will show.

tl;dr: we're in the clear as far as the summary pages are concerned.

[duncanmmacleod]

One minor change, otherwise, looks good. And good work on figuring out the javascript for the summary page embedding.

[alurban]

Thanks @duncanmmacleod, I've addressed your review comments above, when build tests pass I'll merge and put out a release as we discussed on this morning's call.

As discussed on a call this morning, once I make these simple changes, I have permission to merge