Add Lucky Orange integration

[bittner]

Adds a new integration for a service similar to Hotjar.

Fixes #172

[codecov]

Codecov Report

Merging #175 (05213ae) into master (7f1358d) will increase coverage by 0.11%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #175      +/-   ##
==========================================
+ Coverage   94.14%   94.25%   +0.11%     
==========================================
  Files          28       29       +1     
  Lines        1246     1270      +24     
==========================================
+ Hits         1173     1197      +24     
  Misses         73       73              

Impacted Files	Coverage Δ
analytical/templatetags/analytical.py	97.56% <ø> (ø)
analytical/templatetags/luckyorange.py	100.00% <100.00%> (ø)

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[smithdc1]

I proof read the docs and they seem good to me.

[bittner]

Okay, I rebased the branch. So, we only need to decide whether we want to require explicit confirmation from Lucky Orange support on the included CDN URL, before merging.

BTW, to implement this integration I simply copy+pasted & search+replaced the excellent Hotjar integration code, including the docs. And for the rebasing I made sure with a diff that everything is still super-aligned. So, I'm standing on the shoulders of others who are bigger, smarter and more hardworking than I am. – Thanks @PiDelport!