Change handle errors mechanism. Remove errorsHandler. Use core.error
Change response mechanism. Add method core.responseHtml, core.responseJson, core.responseHtmlFromTemplate
Change routing system. Add method core.addRoute
Add some jsdocs
Fix some bugs
Js and css files building in 'build' folder
Add  etc/inspect in .gitignore, for some code for IDE inspection (exemple, "var __dirname = '';"