Merge pull request #300 from just-boris/master

allow to build with maven 3.0.4
[maven-release-plugin] prepare release allure-core-1.4.0.RC6
[maven-release-plugin] prepare for next development iteration
Add posibility to merge environment with *.properties
Fix environment files regex
Merge pull request #302 from eroshenkoam/master

Add posibility to merge environment with *.properties
[maven-release-plugin] prepare release allure-core-1.4.0.RC7
[maven-release-plugin] prepare for next development iteration
Fix classloader problem
Merge branch 'master' of github.com:allure-framework/allure-core
Merge pull request #303 from eroshenkoam/master

Fix classloader problem
[maven-release-plugin] prepare release allure-core-1.4.0.RC8
[maven-release-plugin] prepare for next development iteration
return back progress bar with statistics