Priorities are not computed

[maricaantonacci]

Preferences returned by the REST API contain an hard-coded value for the priority

slam/src/main/java/pl/cyfronet/indigo/rest/util/IndigoConverter.java

Lines 60 to 61 in 6435a22

	// weight(Double.parseDouble(sla.getMetrics().get(weight).toString())).build();
	weight(0.5).build();

[kmarszalek]

fixed, should compute priorities. please check the solution.