title: JQuery Datatables disable/remove row count options depending on number of records
body: <p>By default, datatables has 4 sizes of records to show: 10,25,50,100.
  All the option are available by default no matter how many records in table.</p>
  
  <p>If table has 18 entries is there any option to disable or remove 50 and 100 from the dropdown. 
  or if disable row count if records are less than 10.</p>
  
  <p>I can't find either of these in the documentation.</p>