fix(odata): encode URI also for IN/NIN operators, fixes #463

[ghiscoding]

• fixes #463

[codecov]

Codecov Report

Merging #471 into master will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##            master      #471    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files          148       148            
  Lines         9534      9534            
  Branches      3311      3177   -134     
==========================================
  Hits          9534      9534            

Impacted Files	Coverage Δ
...s/angular-slickgrid/services/grid-odata.service.ts	100.00% <100.00%> (ø)

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