Fix incorrect response result for sortcontact command

[yatbun]

Also standardised sortpolicy command result.

Fix #155

[codecov-commenter]

Codecov Report

Merging #156 (fba9e1b) into master (8423a8d) will not change coverage.
The diff coverage is 0.00%.

@@            Coverage Diff            @@
##             master     #156   +/-   ##
=========================================
  Coverage     49.64%   49.64%           
  Complexity      503      503           
=========================================
  Files           107      107           
  Lines          2270     2270           
  Branches        280      280           
=========================================
  Hits           1127     1127           
  Misses         1083     1083           
  Partials         60       60           

Impacted Files	Coverage Δ
...asa/logic/commands/contact/SortContactCommand.java	0.00% <0.00%> (ø)
...siasa/logic/commands/policy/SortPolicyCommand.java	0.00% <0.00%> (ø)

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[meerian]

LGTM