[Today view] some components are "never" refreshed

[martinfilliau]

Some components should be refreshed from "time to time" as they will appear outdated after a few hours, and may confuse the user.

Components:

• oxford date
• weather
• river status
• events

[martinfilliau]

This is also affecting the notifications...
A first attempt to fix the issue has been made in 76eed7f (only when resuming the app on Phonegap) however it is far from ideal as this is doing a full reload of the page, we should rather be able to call the router function index() but this is causing a weird issue atm where none of the cards are displayed (their card model appears to be incorrectly keeping the flag "mid-request" true indefinitely).