refs #6458, closes#6457
- replaces jquery-ui.sortable with ember-sortable for drag-n-drop handling
- moves the "new/blank" nav item out of the nav items list
- allows it to be excluded from the draggable list
- cleans up handling of the `navigationItems` array as there's no longer a need to ignore/exclude this extra item
- clears validation errors when typing in the respective field
- adds acceptance test for adding/removing nav items
- improves acceptance test for saving nav items to cover more edge cases
no issue
- add ember-suave dependency
- upgrade grunt-jscs dependency
- add a new .jscsrc for the client's tests directory that extends from client's base .jscsrc
- separate client tests in Gruntfile jscs task so they pick up the test's .jscsrc
- standardize es6 usage across client
no issue
- update grunt-jscs dependency
- fix deprecated `validateJSDoc` configuration
- fix numerous linting errors, including:
- use of future-reserved `public` and `private` variable names
- use of `[]` instead of dot-notation (especially `express['static']` and `cacheRules['x']`)
- extra spaces in `const { run } = Ember` style constructs
One issue that did become apparent is that there are conflicting rules that prevent the use of object function shorthand such that both of these:
```
{ myFunc() {} }
{ myFunc () {} }
```
are called out due to either the missing or the extra space before the `(`
no issue
- standardize on "{TestType}: {ModuleType}: {module-name}" for test description strings
- standardize on `{module-name}-test.js` for test file names
- fix deprecation notices for ember component unit tests without explicit `unit: test` or `needs: []`
issue #5841
- fix relative link checks in navlink url input component
- fix navlink url input component sending absolute URLs instead of relative URLs to action handler
- remove URL manipulation in navigation settings controller (url input handles URL manipulation, validator flags anything that's still incorrect)
- capture cmd-s in url input to ensure changes are actioned before save
- automatically add mailto: to e-mail addresses
- add gh-validation-state-container component so .error/.success validation classes can be applied to any container element
- add validation-state mixin that can be mixed in to any other component to give it access to validation status (used in gh-navitem component to keep alignment when inline error message elements are added)
- validate and display inline errors on save
- improve ember test coverage for navigation settings related controller and components
