UI update

[NicosFabro]

Update UI with:

• [ ] Estandarizar los IDs en los xml
• [ ] colors.xml file: update and use them in all layout views
• [ ] strings.xml file: update and use them in layout views and activities/fragments
• [ ] dimens.xml file: create and use them in all layouts
• [ ] Material Design Theme
• [ ] Material Design Views
• [ ] Material Design Shape
• [ ] Material Design Icons
• [ ] Material Motion

[NicosFabro]

https://material.io/components