checkPoints.js: limit Transactions query to current user

Previously the activity list would show all transactions for all users.
This limits the list to lines of points earned by the current user.
checkPoints.html: add "Dispute" button (non functional)

Adds a button to be used to dispute your point allocation for a given
event/transaction. Currently doesn't do anything.
Merge pull request #4 from drenfr01/feature/check-points-page

Feature/check points page