[Pharo-project] Setting package test

Hi all, Preference is now renamed as Setting. Please, can you can load these two packages and play with the settings. 'SettingTree open' open the browser. Examples of setting are located in the Setting-SandBox category. You can use <pharo> or <setting> as pragma. the pragma list the browser is able to recognize is now a parameter. (see SettingCollector class side). as an example, It will be possible for an application to use its own pragma symbol. Thus, the browser will be able to show application specific settings. I will add 'saving', 'saving as', choose, open, and 'filtering' features (by package or by setting name as available in current preference browser). If you have more ideas or needs, please let me know. Cheers alain