While [spec](https://wiki.openzim.org/wiki/Metadata#Favicon) says that the favicon
should be a 48x48 image, ZIM creators might not respect it.
If a ZIM contains a larger favicon, the UI is broken. This fixes it ans ensures all
favicon have equal sizes, removing the unpleasing lack of harmony that we can see sometimes.
Note that ZIM will smaller size favicon would get blurry as those would be upscaled.
This code is mainly copied from kiwix-tools.
But :
- Move all the response thing in a new class Response.
- This Response class is responsible to handle all the MHD_response
configuration. This way the server handle a global object and do
no call to MHD_response*
- Server uses a lot more the templating system with mustache.
There are still few regex operations (because we need to
change a content already existing).
- By default, the server serves the content using the id as name.
- Server creates a new Searcher per request. This way, we don't have
to protect the search for multi-thread and we can do several search
in the same time.
- search results are not cached, this will allow future improvement in the
search algorithm.
- the home page is not cached.
- Few more verbose information (number of request served, time spend to
respond to a request).
TOOD:
- Readd interface selection.
- Do Android wrapper.
- Remove KiwixServer (who use a external process).
-