Ledger collection implemented

The ledger collection now renders to a template to show all transaction
data including vendor name and category name
Implementation of ledger collection and trans model

Removed all unnecessary vendor libs and when necessary, replaced them
with their updated versions.
This commit comes just after making all table fields editable. (No
typeahead, no date picker…etc)
Backbone save/delete transactions

Added form elements to the ledger table. Added save and delete to the
ledger of transactions.