Added test code coverage measurements using coverage.py, integrated as a test in the test suite. This test compares the current code coverage of tests with that saved for the latest release. Also converted the URL and template coverage measurements into tests, comparing current with the latest release. The result of this is that the coverage tests will fail if new code is added without sufficient test coverage to at least match that of the latest release. Over time, this should encourage gradually improved test coverage as seen for both code, templates, and urls. Coverage data is also saved to file, and can be read by the 'coverage' shell command to produce html or text reports.

 - Legacy-Id: 9103

Author: levkowetz

.gitignore

@@ -18,6 +18,7 @@
 /.project
 /.pydevproject
 /.settings
+/.coverage
 /unix.tag
 /testresult
 /mergelog
@@ -28,3 +29,4 @@
 /local
 /lib
 /include
+/coverage-latest.json

bin/.gitignore

@@ -11,3 +11,6 @@
 /activate_this.py
 /pyflakes
 /pip2.7
+/coverage
+/coverage2
+/coverage-2.7