fix(filter): recreate filter when toggling header row, fixes #493

[ghiscoding]

• fixes Toggle filter view showing as blank space after reorder the columns in Angular SlickGrid #493

[codecov]

Codecov Report

Merging #496 into master will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##            master      #496    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files          148       148            
  Lines         9545      9548     +3     
  Branches      3187      3323   +136     
==========================================
+ Hits          9545      9548     +3     

Impacted Files	Coverage Δ
...lickgrid/components/angular-slickgrid.component.ts	100.00% <100.00%> (ø)
.../angular-slickgrid/extensions/gridMenuExtension.ts	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 1550d9d...7cf991e. Read the comment docs.