* Update `add_license` script
* run script
* add `remove duplicate lines script` and run it
* Revert changes `English spaces`
* strip whitespaces
* Revert `GPL` in files with `apache/mit license`
* don't append `gpl license` in files with other lic
* Don't append `gpl header` in files with other lic.
* re-ran script
* include c and cpp files too
* remove duplicate header
* rebase nit
* TEMP: Bind to 0.0.0.0, don't check Origin
* More CLI options for IPFS
* CORS and Hosts filtering
* Allow current interface as origin
* Correctly handle CORS settings
* fix grumbles
This is done by requests sending CID with raw binary codec (0x55).
Note: this functionality is exactly the same as fetching state-trie
due to how db internals work in Parity atm.
