Skipping mergewebxml and generateAsync goals when packaging pom

Change-Id: Iac2018d3516fda7fcb995b7edcf98feb3322359f
Fix absolute path handling in TestMojo.forkToRunTest
[FIXED MGWT-288] Fix the typo: useGoogleEclispePlugin should be useGoogleEclipsePlugin
[FIXED MGWT-289] Maven 3 - Missing Plugin dependency when using gwt:compile-report
[FIXED MGWT-283] ClassNotFoundException: org.apache.commons.io.IOUtils
[FIXED MGWT-291] Bad links on website
Merge pull request #16 from jieryn/MGWT-283

[FIXED MGWT-283] ClassNotFoundException: org.apache.commons.io.IOUtils
Merge pull request #17 from jieryn/MGWT-288

[FIXED MGWT-288] Fix the typo: useGoogleEclispePlugin should be useGoogle
Merge pull request #19 from jieryn/MGWT-291

[FIXED MGWT-291] Bad links on website
[MGWT-275] adding an integration test to reproduce the problem
[MGWT-275] removing a lot of unused verify.groovy checks
[FIXED MGWT-275] Include *.ui.xml files in resource
Merge pull request #20 from jieryn/MGWT-275

[FIXED MGWT-275] Include *.ui.xml files in resource
Merge pull request #18 from jieryn/MGWT-289

[FIXED MGWT-289] Maven 3 - Missing Plugin dependency when using gwt:compi
Added support for passing -XdisableRunAsync to GWT compiler.
upgrade to gwt 2.4.0
Merge pull request #21 from samskivert/master

Add support for -XdisableRunAsync
Merge pull request #12 from rodolpheche/master

Skipping mergewebxml and generateAsync goals when packaging pom
Merge pull request #15 from mcole/master

Fix Jira issue MGWT-308
change version to 2.4.0-SNAPSHOT to follow gwt version