Update maven dependencies

[stefanscheidt]

as of Sept. 9th 2011:

[INFO] The following dependencies in Dependencies have newer versions:
[INFO] com.h2database:h2 ................................. 1.3.154 -> 1.3.159
[INFO] javax.servlet:servlet-api ......................... 2.5 -> 3.0-alpha-1
[INFO] junit:junit ............................................. 4.8.2 -> 4.9 ???
[INFO] mysql:mysql-connector-java .......................... 5.1.15 -> 5.1.17
[INFO] org.cloudfoundry:cloudfoundry-runtime ................. 0.6.1 -> 0.8.0
[INFO] org.mockito:mockito-all ........................... 1.8.5 -> 1.9.0-rc1
[INFO] org.seleniumhq.selenium:selenium-api .................. 2.0b3 -> 2.5.0 ???
[INFO] org.seleniumhq.selenium:selenium-htmlunit-driver ...... 2.0b3 -> 2.5.0 ???

[INFO] The following plugin updates are available:
[INFO] maven-surefire-plugin .................................... 2.6 -> 2.9
[INFO] org.mortbay.jetty:jetty-maven-plugin .... 7.3.1.v20110307 -> 8.0.0.M3 -> use 7.5.1.v20110908

[WARNING] Some problems were encountered while building the effective model for com.opitzconsulting.codecamp:bwertr:war:0.1.0-SNAPSHOT
[WARNING] 'build.plugins.plugin.version' for org.codehaus.mojo:exec-maven-plugin is missing. @ line 180, column 29

Recreate iteration tags after update.