fixed unconnected roots in the viewer
fixed bug on obd repairs
fixed issues with viewer
Fixed #136
Merge branch 'master' of https://github.com/haslab/echo
Fixed #137
Incrementing the delta was decrementing the overall intscopes.
Fixed a typecheck problem with an alloy expression
protecting.
.gitinore
Merge branch 'master' into cancelling

Conflicts:
	plugins/pt.uminho.haslab.echo/src/pt/uminho/haslab/echo/EchoRunner.java
	plugins/pt.uminho.haslab.echo/src/pt/uminho/haslab/echo/consistency/qvt/QVTCondition.java
	plugins/pt.uminho.haslab.echo/src/pt/uminho/haslab/echo/transform/alloy/XMI2Alloy.java