wip on updating bootstrap file operations
minor fixes and clanup (wip)
Moved bootstrap_file_operations.h to includes
cleanup
Added Serialise/Parse BootstrapContacts
Merge remote-tracking branch 'origin/next' into vault_manager_update
Added a note to use asymm::PublicKey in bootstrap contacts
Added SerialiseBootstrapContact and ParseBootstrapContact
mute one assertion
avoid dispatching tasks to stopped asio_service
do not post outstanding task for canceled task