remove mock data and unused functions.
Merge branch 'upstream-develop' into feature/update-stock-graph-with-stock-balance
adds transaction summary functions. refs item:836
adds get ledger stock balance function. refs item:836
unify ledger stock bal and most recent stock count and update stock graph. refs item:836
updated sorting logic
Merge branch 'upstream-develop' into feature/update-stock-graph-with-stock-balance

Conflicts:
	app/scripts/services/bundle-service.js
Merge pull request #521 from jofomah/feature/update-stock-graph-with-stock-balance

Feature/update stock graph with stock balance