Reactive web

[commial]

This PR aims to speed up the web rendering.

According to Speeding up AngularJS apps with simple optimizations:

It’s known that Angular becomes slower with around 2,000 bindings due to the process behind dirty-checking. The less we can add to this limit the better, as bindings can add up without us really noticing it!

Using a $$watchers counter, on a slow render query (#1 range:64.170.144.217-69.39.229.61 on ModBus scan):

• Without the PR: 250 359 watchers (!)
• By rendering full view only if host.fulldisplay: 25494. On my computer, this is the difference between a "Slow script" box on Firefox and no box.
• By using the AngularJS one-time-binding syntax on summary {{::: 8866. Expanding the first result (67.47.105.226) go to 29698.
• By using this same syntax on full mode: 18975 with the first result opened.

More optimization could be done. This PR aims to be a first step in order to allow a better render time on big hosts.

[p-l-]

Really nice catch! There are still a lot bindings that should be switched to one-time bindings in templates/. Do you want to fix them in the same PR or do you prefer that I merge this one and do the remainder in another one?