* issue#2375 allow change of delimiter for csv download

* fix eslint issues, bugfix usage-dashboard when no stats exist, Styling tweaks to csv separator

* fix issues with tests by defaulting the separator to a comma NOTE: does not enforce tests on the separator param working

* fix issues with new separator argument in stat-created-plan and spec

Co-authored-by: Sam Rust <xsrust@gmail.com>

* removed erroneous div tag

* Updated deep_copy on PLan model to set feedback_requested to false

* fixed typo in plan export

* refactored usage code to place most of the presentation logic into Rails instead of JS

finished up changes to usage

fixed eslinter issues

fixed rubocop issues

fixed additional rubocop issues

fixed issue with filter

fixed issue with totals

removed old controller test and added new usage_controller tests

added tests for new usage_helper

added usage_policy tests and pundit test helper

fixed some rubocop complaints

fixed up remaining rubocop issues

* removed opens in a new window for usage download buttons and moved org selector to below filters

* fixed some rubocop complaints in spec test

- Moved mouse pointer instruction.
    - Made textual changes to "No. of plans by template"
    - The bar charts for  "No. users joined during last year" and
    "No. plans during last year" months are in ascending order. They were
    in descending order previously. Updated the count statistics methods
    in statistics_controller.rb.
    - The "No. plans by template" bar chart is now  replaced by a stacked bar chart
    as this is visually better for large data.
    - updated the by_template method in the create_or_update.rb with code from @xsrust.
    This now aggregates template counts for a month correctly.

    Fix for issue #1679.

- The 'No. of plans by template" section restyled
 - Added instruction to 'No. of plans by template'
 - Added a message for 'No. of plans by template' chart if
 no data available for a chosen time period.

Fix for changes requested in issue #1679.

(1) The headers for the CSV for the Number of Plans by Template
             - the date column have dates in the format  'Jan 2018'
             - the template headers now display the Title of the templates
             - the Date and Count headers are capitalized.

        (2) The chart has been re-styled.
            The aspect ratio (width/height) of image is now dynamically
            set according to the selection of the month range.

        (3) Fixed broken rspec tests and rubocop errors/warnings.

        Fix for #1679.

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