see #14 for reference

this is not useful anymore. closes #13

This is almost useless. WP_CONTENT_URL is a deprecated constant only used in one theme, elegant-grunge. The definition is based on the output get_option('siteurl'), which I think should also be set to the https address. Nonetheles, just to be safe, let's keep this patch for the moment, but we should check if we can drop it.

added noblogs/themes-misc as a dependency, and removed the corresponding theme patches.
This themes are not on wordpress.org anymore, so they will not be updated from upstream,
and thus we have to keep them in our own repo (but there is no need to separate patches
from upstream).

We might want to consider whether to keep them or remove them in the future.

This commits gets rid of the extra external directory to unpack mu-plugins.
They are instead directly extracted into wp-content/mu-plugins/{name}/, and then the relevant files are copied
(via the drop-in mechanism) to wp-content/mu-plugins/. This leaves spurious directories with undeeded files (readme, composer conf, etc.),
but they should be harmless.

the Drop-in mechanism does not need to specify a file-name, in which case it copies all files (excluding readme.txt and similars). Slightly less stuff to write in this case: plugins which declare themselfs to be mu-plugins will be handled automaticaly, the ones which do not have to be listed twice.

More-privacy-option plugin actually ships with other files (translations), so it should not be considered a mu-plugin, but installed network wide as a regular plugin.