operations more human readable

[oxarbitrage]

oxarbitrage/bitshares-explorer#1

need to make operations human readable as cryptofresh. ASAP.

[oxarbitrage]

initial work for this at: da7fec0

already visible in http://open-explorer.io/#/dashboard and account pages(http://open-explorer.io/#/accounts/1.2.20067)

not all ops are added yet to this human readable form but the most popular, work will continue to support them all.

almost all the work is included in a utility file that can be found at: https://github.com/oxarbitrage/open-explorer/blob/master/app/core/app.utilities.js

more utility functions will be added to this file going over #15