Cleanup examples according to last updates.

[mihails-strasuns]

I.e. http_info gives this warnings:

Compiling diet template 'info.dt'...
Warning: using render!() or parseDietFile!() with aliases is unsafe,
         please consider using renderCompat!()/parseDietFileCompat!()
         until DMD is fully stable regarding local alias template arguments.
Compiling diet template 'info.dt'...
Warning: using render!() or parseDietFile!() with aliases is unsafe,
         please consider using renderCompat!()/parseDietFileCompat!()
         until DMD is fully stable regarding local alias template arguments.

Probably there are more warnings in examples, have not checked them all yet. As examples are supposed to be "good style" guidelines for basic tasks, in my opinion, they should be updated.

[mihails-strasuns]

P.S. dmd 2.061 , vibe 0.7.11, found while re-writing Arch Linux PKGBUILD for vibe.

[s-ludwig]

You are absolutely right, I went through all of them now. This will be another good candidate for the CI server ;)