* config file can now be generated by executable
* rustfmt
* remove now-unnecessary config defaults test
* set up paths and config file creation in user's home directory
* rustfmt
* remove default grin.toml
* add grin configuration command to spit out config file
* Split configuration into wallet and server
* rustfmt
* Restore logging to wallet configurations
* rustfmt
Instead of generating a private file on send that needs to be
provided again in finalize, the private context information is
saved in the wallet db.
Also move internal Context to bona fide libwallet type
* first addition of static wallet file server
* rustfmt
* add custom build functions to download and untar particular release of the web-wallet
* rustfmt
* remove comments
* First implementation of file-based transaction send, receive and finalize in libwallet
* Switch from TOML to JSON (needless complication). Plug in send, receive and finalize wallet commands.
* Pretty JSON for response is too large (all whitespace)
