Dashboard: Container div moved to index.html.

Signed-off-by: matematik7 <domen.ipavec@z-v.si>
Dashboard: GPIO page created.

Signed-off-by: matematik7 <domen.ipavec@z-v.si>
Dashboard: Added i2c page.

Signed-off-by: matematik7 <domen.ipavec@z-v.si>
Dashboard: Added SPI to dashboard.

Signed-off-by: matematik7 <domen.ipavec@z-v.si>
Dashboard: Added shift page.

Signed-off-by: matematik7 <domen.ipavec@z-v.si>