Django-slick-reporting

- Fix issue with Line Chart on highcharts engine
- Reintroduce the stacking option on highcharts engine.
- Fix issue with having different version of the same chart on the same page.
- Enhanced the demo dashboard to show more capabilities regarding the charts.

- Implement Slick reporting media override feature + docs
- Add `Integrating reports into your Admin site` section to the docs
- Group by and crosstab reports do not need date_field set anymore. Only time series do.
- Fix in FirstBalance Computation field if no date is supplied
- Add `REPORT_VIEW_ACCESS_FUNCTION` to control access to the report view

- Add ``get_slick_reporting_media`` and ``get_charts_media`` templatetags
- Add `get_group_by_custom_querysets` hook to ReportView
- Enhance and document adding export options and customizing the builtin export to csv button
- Enhance and document adding custom buttons to the report page
- Enhance and document adding a new chart engine
- Fix in SlickReportingListView
- Move all css and js resources to be handled by `Media` governed by `settings.SLICK_REPORTING_SETTINGS`

- Change settings to be a dict , adding support JQUERY_URL and FONT AWESOME customization 79 & 81
- Fix issue with chartjs not being loaded 80
- Remove `SLICK_REPORTING_FORM_MEDIA`

- Breaking: changed ``report_title_context_key`` default value to `report_title`
- Breaking: Renamed simple_report.html to report.html
- Breaking: Renamed ``SlickReportField`` to ``ComputationField``. SlickReportField will continue to work till next release.
- Revised and renamed js files
- Add dashboard capabilities.
- Added auto_load option to ReportView
- Unified report loading to use the report loader
- Fix issue with group_by_custom_queryset with time series
- Fix issue with No group by report
- Fix issue with traversing fields not showing up on ListViewReport
- Fix issue with date filter not being respected in ListViewReport

- Add a demo project for exploration and also containing all documentation code for proofing.
- Revise and Enhancing Tutorial , Group by and Time series documentation.
- Fix issue with error on dev console on report page due to resources duplication
- Fix issue with Custom querysets not being correctly connected in the view
- Fix issue with time series custom dates
- Fix issue with Crosstab on traversing fields