prepare for Jenkins matrix job configuration
fixating versions to get Jenkins to behave
API change
add a validator for the title field
made import compatible to several plone versions
corrected portlet tests
Merge branch 'master' of ssh://bugs.oeko.net/irill/on.video
as well as latest changes to tests (?)
re-adding the validator
API change, again
API change, again (missed one)
cache the versions files for later inspection
trying to resolve a version conflict during buildout
* likely fixes the bug #1 on github (avoid the thumbnailurl being
  empty), but tests are missing
* code cleanup
* shuffle validators around
* add a new validator to trim the title
removed imports that were unused
* Likely fixes the issue #1 on github: avoid an empty thumbnailurl
* Test are still missing.
remove misleading junk and replace some print statements
Attempt to improve the test suite. Especially, there are now more
browser tests.

One of them is disabled because I have to figure out why the
registry change in the test suite's setUp() method does not
work: The fspath is not being set to /var/tmp/something, but
instead to /tmp, which causes the test to fail. If I step
through the validator which is being tested (validateFilename()
in the video.py module) and re-adjust the path to the temp
directory which is being generated by the setUp() method, the
test passes. :|
conflict resolution