- start using `GET` and query parameters instead of `POST` when
meaningful
- inline parsed protocol data and metadata in block headers
- inline parsed protocol data and metadata in operations
- split the RPC in four categories:
- static data, available explicitly in block headers and operations
- static "metadata", information that were computed while validating
a block or an operation, but which are not explicit in the block
header (e.g. the baker of a block, the list of internal
transfer... (currently not implemented, but that's WIP))
- "context" all the static data we may read in the context
(contracts balance, list of delegates, ...)
- "helpers" are some RPC that may perform some computation.
Before this change, output from `alphanet.sh` looked like the following:
```
New contract alias 'my_account' saved.
Contract memorized as my_account.
\033[32mThe node is now running.\033[0m
\033[32mThe baker is now running.\033[0m
\033[32mThe endorser is now running.\033[0m
\033[33mWarning: the container contains a new version of 'alphanet.sh'.\033[0m
\033[33mYou might run './scripts/alphanet.sh update_script' to synchronize.\033[0m
```
I.e. control characters showed up, instead of modifying the color of the text
output. Repro'd on Container Linux (CoreOS) 1492.3.0.
After this change, `The node is now running` shows up in green &c.
