Get rid of LWP

[racke]

Let's use something modern, like HTTP::Tiny. See http://www.martin-evans.me.uk/node/169.

[melmothx]

Inside the HI code, LWP is used only by TeamWork, and needs to use basic authentication. Now, we could manipulate the headers and pass them, but here for the sake of performances we risk to introduce bugs and malfunctioning and ugly code.

Even if we start using HTTP::Tiny in TW, the other module will still use LWP, so the performance gain is minimal at best. Unless we want to patch other modules as well, but see above.

Given that almost all the used modules interface with external services (which are hard to test by definition), I think it's not worth the trouble.