Updated JS for requiredField to allow for dynamically loaded DOM elements (#1996) ...

* IssueID #1725 - Updated messages Question text and option presence messages.

* updated requiredField.js to allow for dynamically loaded DOM elements

* fixed broken tests

#1371 More specific selector for usage statistics export button

1. stat_created_plan.to_csv with option for details by template. ...

2. details attribute for stats table #1679
3. create_created_plan_service extended with details by template
4. create_last_month_created_plan_service extended with details by
template.
5. create_or_update strategy for generating stats
6. StatCreatedPlanByTemplateController#index for graphs usage
7. month_start_date and month_end_date for OrgDateRangeable class

[RD-1679] Usage view including date input for plans by template

[#1679] monthly_range query updated

[#1679] client-side chart for plans by template

[#1679] Time picker for plans by template chart

[#1679] Download plans by template action.

deleted spec

merge conflicts fixed

[#1679] Removed JS linter warnings

[#1679] Rubocop conforming code. Drying out stat services

Issue #1161 - Display tooltip below form fields on Create plan page. ...

- Required modification for the intiialization of Bootstrap tooltips in the javascript file
      /utils/tooltipHelper.js. The default behaviour is placement of tooltip to the right of element
      with attribute data-toggle='tooltip'. Now if the attribute data-placement attribute is set,
      then the placement of the tootip will be as specfied in the attribute and not on the right (the default behaviour).
    - The accessible combob-box now takes an optional property 'placement' which if present sets data-placement
      attribute to the value of the placement property.
    - Now all Create Plan page tooltips are below the input as requested.

Fix for #1161.

moved JS tests to the spec dir and fixed issues with karma/webpack/jasmine ...

added lint and updated bundle task to use yarn

added lint and updated bundle task to use yarn

renamed yml examples. added them to bin/setup and added eslint init to travis ...

added eslintrc.json back

moved eslintrc to loaders dir

removed eslint init statement

fixed up eslinter

updated rack and destructured array and object assignments in js. updated release portion of readme

added eslintrc back to gitignore

fixed issue with create plan JS, fixed some warnings in specs

removed console.log statements and updated linter task in travis

Update README.md

Update asset structure with webpacker gem