[i18n] fr_FR sync with master README.md changes (toddmotto#132)

* feat(i18n-fr_FR) : add #styles chapter translation

* feat(i18n-fr_FR) : add application example reference

* feat(i18n-fr_FR) : add #controllers advice

* feat(i18n-fr_FR) : add "Stateful and stateless components, the missing manual" link in reference

* fix(i18n-fr_FR) : little syntax cleaning

* fix(i18n-fr_FR) : Scalable file structure sync with master README

* fix(i18n-fr_FR) : refactor to align more closely with Angular 2 (sync with #974f547 commit)

Author: vogloblinsky