Reenable testBuildDirectoryContainsCompiledClasses unit test

This unit test was disabled because it actually did not build the
project. Since 015ecfd projects can be built successfully, so this test
now passes.
Merge pull request #253 from WonderCsabo/reenableTestBuildDirectoryContainsCompiledClasses

Reenable testBuildDirectoryContainsCompiledClasses unit test
Excluded web-site branch from continuous build.
Quarantine unstable test failing continuous build.

The test for remote Android dependencies is failing on continuous builds
when it executes first. For example:

https://travis-ci.org/rgladwell/m2e-android/jobs/33977822

This test has been quarantined temporarily to ensure the stability of
the continuous build:

See here for more information:

https://github.com/rgladwell/m2e-android/issues/254