Fixes some Sonar violations alerts.
Upgrades from Tibor's main branch.
Improvements based on Sonar results.
Merge branch master of git://github.com/tibistibi/mTor.git
Merge branch master of git://github.com/tibistibi/mTor.git
Fixes #84
Merges from main branch git://github.com/tibistibi/mTor.gi
Merge branch 'master' of git://github.com/MiquelSanahuja/mTor

Conflicts:
	src/main/java/nl/bhit/mtor/client/provider/DiskSpaceMTorMessageProvider.java
	src/main/java/nl/bhit/mtor/server/webapp/action/FileUploadAction.java
	src/main/java/nl/bhit/mtor/server/webapp/action/MessageAction.java
	src/main/java/nl/bhit/mtor/server/webapp/action/ProjectAction.java
	src/main/java/nl/bhit/mtor/server/webapp/util/RequestUtil.java