Remove some instances of "starter kit"

Rename some files and change some identifiers to be neutral to the
application name. This makes it simpler to change everything to a proper
name when cloning this project.

Document in the README how to find the remaining places to change.

Closes #20

test/check-starter-kit

@@ -1,33 +0,0 @@
-#!/usr/bin/python
-# Run this with --help to see available options for tracing and debugging
-# See https://github.com/cockpit-project/cockpit/blob/master/test/common/testlib.py
-# "class Browser" and "class MachineCase" for the available API.
-
-import os
-import sys
-
-# import Cockpit's machinery for test VMs and its browser test API
-TEST_DIR = os.path.dirname(__file__)
-sys.path.append(os.path.join(TEST_DIR, "common"))
-sys.path.append(os.path.join(os.path.dirname(TEST_DIR), "bots/machine"))
-import testlib
-
-
-class TestStarterKit(testlib.MachineCase):
-    def testBasic(self):
-        b = self.browser
-        m = self.machine
-
-        self.login_and_go("/starter-kit")
-        # verify expected heading
-        b.wait_present(".container-fluid h2")
-        b.wait_text(".container-fluid h2", "Starter Kit")
-
-        # verify expected host name
-        hostname = m.execute("hostname").strip()
-        b.wait_present(".container-fluid span")
-        b.wait_text(".container-fluid span", "Running on " + hostname)
-
-
-if __name__ == '__main__':
-    testlib.test_main()