add fullscreen overlay so the tooltips for the 2 dag toggles show

[NatalieEO]

dockstore/dockstore#1993
I don't think this was being covered by the sidebar anymore? Anyway, fixed the two tooltips not showing in fullscreen mode by adding the overlaycontainer.

[coverbeck]

Interesting, so you do that and it just works? I guess the old days of modifying CSS directly are going away. :)

[NatalieEO]

Interesting, so you do that and it just works? I guess the old days of modifying CSS directly are going away. :)

Yeah I wasn't successful messing with the z-index, but found this angular/components#1628 after some googling

[codecov]

Codecov Report

Merging #749 into develop will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #749   +/-   ##
========================================
  Coverage    61.75%   61.75%           
========================================
  Files          268      268           
  Lines         8428     8428           
  Branches       809      807    -2     
========================================
  Hits          5205     5205           
  Misses        3022     3022           
  Partials       201      201

Impacted Files	Coverage Δ
src/app/myworkflows/my-services.service.ts	55.55% <0%> (-3.82%)	⬇️
src/app/configuration.service.ts	23.91% <0%> (-0.09%)	⬇️
src/app/shared/auth.model.ts	100% <0%> (ø)	⬆️

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