77199942c5
Replace the old JSON-RPC interface with the new long term supported REST API. Since this is a major change to the types being transported over the network, make a copy of the UI code until we can replace all existing uses of the old types in the UI code. Unlike the old interface, the web UI client now obtains the label information during the query and avoids a second round trip to lookup the current approvals for each displayed change. For most users this should improve the way the page renders. The verified and code review columns will be populated before the table is made visible, preventing the layout from "jumping" the way the old UI did when the 2nd RPC finally finished and supplied the label data. The columns in the table are drawn to match the requirements of the submit rules that apply to each change, which makes the UI more dynamic and does not require knowing in advance all of the valid labels by way of the ApprovalTypes global state object. This is a nice step towards getting rid of the hard coded approval_categories table in the database and making the system reflect per-project rules. Change-Id: I8d83b83e8b95bf2e6fcdfe04f5835cf97bd843b7