Fix property in Mojo Javadoc tag

${aSystemProperty} doesn't work with property attribute.

https://maven.apache.org/developers/mojo-api-specification.html

maven-plugin-plugin 2.x:
@parameter expression="${aSystemProperty}" default-value="${anExpression}"

maven-plugin-plugin 3.x:
@parameter property="aSystemProperty" default-value="${anExpression}"
Merge pull request #174 from shirosaki/fix_mojo_config

Fix property in Mojo Javadoc tag
Close input streams when done with them

Fixes https://code.google.com/p/wro4j/issues/detail?id=864
prepare new dev iteration
Merge branch '1.7.x' into issue860
git push origin 1.7.x --forceMerge branch 'issue860' into 1.7.x
Merge remote-tracking branch 'candrews/issue864' into issue864
Merge branch 'issue864' into 1.7.x
update test to avoid intermitent failure
Merge branch 'issue860' into 1.7.x
Merge branch '1.7.x' into issue861
create a getFullPath utility method which fixes the problem on windows by using servlet context relative paths also on windows platform
use getFullPath utility method which should fix issue865
Merge branch 'issue861' into 1.7.x
update webjars-locator version
Merge branch 'webjarsLocatorUpdate' into 1.7.x
update handlebars and emberjs webjar dependencies & fix tests
Merge branch 'handlebarsUpdate' into 1.7.x
use less4j-1.5.2
Merge branch 'less4jUpdate' into 1.7.x