Support inlining files which are force-interpretted as LESS.

This change is merely compatibility with LESS syntax. In our implementation everything imported by JAGGR will be interpretted by LESS.
Make inline imports occur prior to processing the CSS.

This change makes the CSS processing step only in-line images and
minify resulting CSS. The means that any subclasses of
CSSModuleBuilder should handle their own in-lining of @import
statements.
Change the LESS compiler used.

This change also uses JAGGR's own @import in-lining.
Fix issues running on IBM Domino
Fix cacheBust issues
Fix CSSModuleBuilder test.

Test was broken because minify was moved to a different point in the aggregation process.
Merge pull request #180 from KenPowers/lesscss-java

Change LESS Compiler
More changes to work around Domiono issues
Add getProperty() config scope method and invoke aggregator variable
resolver for all init-params (servlet + extensions).
Merge pull request #181 from chuckdumont/master

Fix issues running on IBM Domino
Merge commit '18c6ffbb1e9ecc8d5d2b75f33cfddbf594c21226'
Fix formatting.

Mixed tabs and spaces throughout `jaggr-sample-dojo/pom.xml`.
Replace copy-maven-plugin with maven-antrun-plugin with overwrite set to false.
Merge pull request #186 from KenPowers/maven-3.1.0-fix

Maven 3.1.0 Fix
Make sure variable resolver extensions are initialized before
init-params are used.
Merge pull request #184 from chuckdumont/master

Improve variable substitution support
Fix cachability issues