Migrate from inliner to web-resource-inliner

[w00000dy]

This migrates from the old inliner package to the web-resource-inliner package.

Now we don't get this warning anymore:

(node:29032) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)

If you are wondering why the flash size increased, it is because the old inline package did not respect /*! these comments */ with exclamation marks.
Now, if you look at the source code, you can see the iro.js license.

Before:

RAM:   [=         ]  14.8% (used 48472 bytes from 327680 bytes)
Flash: [========= ]  86.8% (used 1365765 bytes from 1572864 bytes)

Now:

RAM:   [=         ]  14.8% (used 48472 bytes from 327680 bytes)
Flash: [========= ]  86.8% (used 1365845 bytes from 1572864 bytes)

This fixes #4166.