Move dependency managements to the Nuxeo root pom

<jutf7.version>1.0.0</jutf7.version>

<dependency>
  <groupId>com.fasterxml.jackson.jaxrs</groupId>
  <artifactId>jackson-jaxrs-json-provider</artifactId>
  <!-- TODO to be added to Nuxeo main pom -->
  <version>${jackson.version}</version>
</dependency>

<dependency>
  <groupId>com.beetstra.jutf7</groupId>
  <artifactId>jutf7</artifactId>
  <version>${jutf7.version}</version>
</dependency>