JSON filename usage where JSON expected in cleos

Issue2015 complete developer tutorial

Multisig contract

hacked propose function that reads input data directly, field names fixed in chain_initializer #1030

Changed push action/transaction to allow json files to be passed where json strings are expected, updated comments, and changed existing code to use new function. GH #2077

This commit finalizes the set of changes from the review of the tutorial.

Change block id

Fix for #2105

derive signature count from signatures not recovered keys.  Also do it the same whether in push_transaction or apply_block EOSIO/eos#2105

Issue 2096 - Removed directives from CMakeLists.txt that install bad files

Fixes to delayed input transaction processing, and transaction header usage fields now specify upper limits on cpu and net bandwidth

Also, `execute_after` (or `delay_until`) parameter is removed from the `send_deferred` contract API since that can be specified using the `delay_sec` field in the transaction header.

Fix a few remaining eos to eosio paths

Canceling a delayed transaction with transaction id

DAWN-386 fix some of the test cases in special_accounts_tests

fix 2020(softfloat truncation overflow) and adding related unittest c…

fixes for review of PR 1979

fix bug when run using docker-compose

Fix mistake in chain_api_plugin's CMakeLists.txt