Added a unique ID to custom script

[mak001]

• allows for more customization
  Updated gitignore
  resolves Add a uniquenessID to customScript requirement in Locator_Controller #163

[muskie9]

Looks good, do you have any documentation/examples for developers we could include in the readme for instances they may leverage this. Could do a separate PR for that if there is anything.

[codecov]

Codecov Report

Merging #164 into 2.0 will not change coverage.
The diff coverage is 0%.

@@           Coverage Diff           @@
##              2.0     #164   +/-   ##
=======================================
  Coverage   58.52%   58.52%           
=======================================
  Files           5        5           
  Lines         311      311           
=======================================
  Hits          182      182           
  Misses        129      129

Impacted Files	Coverage Δ
code/pages/Locator.php	36.52% <0%> (ø)	⬆️

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