chore(fontello): fix fontello path. The grunt-fontello is still a bit buggy, the link to the fonts defined in the fontello css files are not correctly set it's always the default value. ../font/
chore(fontello): update fontello icons
refactor(less): renamed folder
feat(less:base): add base less + add roboto fonts
feat(less): add multiple stylesheets for app and appCategory
feat(catalog): enhance catalog page display