Dioxus master pre 0.5

Use the main branch of dioxus(this is the 0.5 version of dioxus) including the following changes:

• Use signals instead of use_state and fermi
• The context is not passed as a function parameter anymore
• The dependencies have changed, we need to enable the router and web features in dioxus and web in dioxus_router
• Use rsx! directly without render!

The dioxus dependency used in the Cargo.toml will still point to the github branch instead of a numbered version until dioxus 0.5 gets released.