DS-1838 - add context to  two methods  to have monthly statistics localised

In the SolrLogger.java the method

public static ObjectCount[] queryFacetDate(String query,
            String filterQuery, int max, String dateType, String dateStart,
            String dateEnd, boolean showTotal, Context context)

must have the context parameter to be able to localise the month facet.

because it calls method

 private static String getDateView(String name, String type, Context context)

that gets the month value.