[maven-release-plugin] prepare release teachus-1.12.1
[maven-release-plugin] prepare release teachus-1.12.1

git-svn-id: a9f2e0f3252337df3758aa7930bc4a732e65ce15@151 9534b298-6716-0410-9c14-e4ca5a2019ab

teachus/teachus,teachus/teachus