Updates pom.xml and new ecosystem build

Makes pom.xml use the plugin-profile pom provided by scala IDE.
New ecosystem build which is taking scala IDE ecosystem paths as
parameter to define what to build.
Merge pull request #17 from skyluc/ecosystem-build

Updates pom.xml and new ecosystem build
Changed the ecosystem build script to support parameters for giving scala-ide sites and whether to publish InSynth
Merge branch 'master' into development

Conflicts:
	ch.epfl.insynth.build/pom.xml
Fixed small pom issues after merging Luc's PR