Replacement of contentMacro with Macro for aria:Dialog configuration

contentMacro property has been removed in version 1.5.1 of Aria Templates.

Close #51.
Removal of bindValue from touch:Slider widget configuration

`bindValue` property of touch:Slider was removed from the framework (https://github.com/ariatemplates/ariatemplates/commit/67a667eccd5797e12c7f3c34d72ff4ec195d68fa) in favour of bind.value.

Close #52.
Removing deprecated widget touch:Dialog

Removing deprecated widget touch:Dialog
Merge pull request #53 from fab-b/removing_touch_dialog

Removing deprecated widget touch:Dialog
Sample update for section, TabPanel, Tooltip, Dialog and $refresh signature change

Since version 1.5.1 (https://github.com/ariatemplates/ariatemplates/pull/1058),
- `section` statement cannot be used as a container. Its `macro` configuration property is now mandatory.
- `filterSection` and `outputSection` can no longer be used in the parameter passed to the `$refresh` method of the `TemplateCtxt`. They are replaced by the `section` property (`{section : "sectionId"}`). It is also advisable to stop specifying a macro as a second parameter, as each section now comes with a mandatory macro.
- `aria:Tooltip` widget can no longer be used as a container. The `macro` property of its configuration is hence mandatory.
- `aria:TabPanel` widget can no longer be used as a container. The `macro` property of its configuration is hence mandatory.
- `aria:Dialog` widget can no longer be used as a container.

The documentation material has been updated accordingly.

Close #54
Sample updates for auto-escape in expressions
commit for multiautocomplete samples
Removal of cssClass from sections and repeaters

`cssClass` in sections and repeaters is deprecated starting from version 1.5.2 of Aria Templates.

Close #56