Remove getShown mehtod. Fix show and hide methods.
#989 Tabs: remove getShown method. Fix shown method and event.
#987 Menu: Remove getShown tests. Use fold property insted of _children.
#987 Expandable: Public methods should return the same instance.
#987 Menu: Public methods should return the same instance.
#987 Tabs: Public methods should return the same instance.
#987 Namespace: Update tests.
#992 Util: Remove deprecated functions.
#987 Factory: Update tests.
Remove self execution funciton from core modules. Use spaces instead of tabs.
#989 Remove accordion from mobile view.
#987 Content: Add new tests. Fix boolean value of _options.cache.
#987 Content: Fix describe description.
#987 Form: Use space instead of tabs. Fix styles and scripts sources.
#989 Form: Update errors anda validations names.
#987 Form: Update and create new tests.
#987 Validation: Update and create new tests.
#987 Form: Fix wording and use isShown() instead of isActive.
#987 Custom: Update and create new tests.
#987 Remove legend from From and Validations view.