Fix for starting embark with a contract that has an error, then fixing, seems to still break the pipeline.

Needed to reset the `compileError` flag once compilation succeeded.

lib/contracts/contracts.js

@@ -267,6 +267,8 @@ class ContractsManager {
         self.compileError = true;
         self.events.emit("status", __("Compile/Build error"));
         self.logger.error(__("Error Compiling/Building contracts: ") + err);
+      }else{
+        self.compileError = false;
       }
       self.logger.trace("finished".underline);
       done(err, self);