clean up storage and account tombstones from BlockCache when account removal has occurred, for example after SELFDESTRUCT

change hasBase to bool return as intended and add check for native contracts to simulated call (for query-contract)

Use genesis and config makers in test

Introduce assertion on global Burrow version and get Application to assert compatible consensus by type

Removed logging from HasPermission, ugly to pass log in for each of these, and besides we should be only representing known permissions through the type system

This reverts commit 1ac25984, reversing
changes made to 40d6b9fd.

licence: remove various GPLv3 copyright headers;

event_new: remove unused package that had been copied for discussion

monax: lingering eris -> monax company rename

licence: last pass, further cleanup

Change case convention for permissions contract to match solidity style guide, add missing godoc comments, automate signature test

Refactor templating to util, move 'Solidity' types to a more proper abi package, improve documentation of permissions snatives and improve argument and return types

Introduce more strongly typed SNatives, templates for generating contract, and test for permissions contract