fix(core): hide Grid Menu Filter/Sort cmd when disabling functionality

[ghiscoding]

No description provided.

[codecov]

Codecov Report

Merging #607 into master will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #607   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          149       149           
  Lines         9949      9975   +26     
  Branches      3518      3529   +11     
=========================================
+ Hits          9949      9975   +26     

Impacted Files	Coverage Δ
...dules/angular-slickgrid/services/filter.service.ts	100.00% <100.00%> (ø)
...modules/angular-slickgrid/services/sort.service.ts	100.00% <100.00%> (ø)

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