This renames the local_client zone to loc_client, as local_clint exceeds
the maximum zone length allowed for firewall3, which is 11 bytes.
This worked previously due to firewall3 using unsafe string operations.
Now creation of the chain fails (latest OpenWrt master).
All Access-Control-Allow-Origin are removed to improve users' privacy. As
the status page API is thus not useful without the status page anymore,
merge them back into a single package.
The status-page-api respondd provider is removed as well.
Fixes#1194