shell: Simplify styling of the tools menu
shell: Simplify styling of the tools menu

It looks out of place all 3D rounded. It's meant to be a place to
put less used items, and not be the main focus of attention.

Closes #2173
Reviewed-by: Andreas Nilsson <f46bf31e47ec2b1a1da3827009f5228b3edfa016@redhat.com>

jscotka/cockpit,xhad/cockpit,sgallagher/cockpit,sgallagher/cockpit,moraleslazaro/cockpit,larskarlitski/cockpit,Scribery/cockpit,larsu/cockpit,mareklibra/cockpit,deryni/cockpit,mvollmer/cockpit,FireDrunk/cockpit,petervo/cockpit,fridex/cockpit,arilivigni/cockpit,vbatts/cockpit,deryni/cockpit,jscotka/cockpit,vbatts/cockpit,larskarlitski/cockpit,moolitayer/cockpit,garrett/cockpit,dperpeet/cockpit,sgallagher/cockpit,FireDrunk/cockpit,michalskrivanek/cockpit,nmav/cockpit,xhad/cockpit,evol262/cockpit,martinpitt/cockpit,garrett/cockpit,evol262/cockpit,Scribery/cockpit,xhad/cockpit,fridex/cockpit,martinpitt/cockpit,Armstrong1992/cockpit,FireDrunk/cockpit,vanloswang/cockpit,dperpeet/cockpit,mareklibra/cockpit,mareklibra/cockpit,SotolitoLabs/cockpit,stefwalter/cockpit,larsu/cockpit,evol262/cockpit,fridex/cockpit,matobet/cockpit,moolitayer/cockpit,larskarlitski/cockpit,petervo/cockpit,mvollmer/cockpit,matobet/cockpit,andreasn/cockpit,darioajr/cockpit,michalskrivanek/cockpit,jscotka/cockpit,xhad/cockpit,dperpeet/cockpit,deryni/cockpit,denysvitali/cockpit,andreasn/cockpit,cockpituous/cockpit,dperpeet/cockpit,Armstrong1992/cockpit,fridex/cockpit,deryni/cockpit,zigitax/cockpit,mvollmer/cockpit,Armstrong1992/cockpit,darioajr/cockpit,netzvieh/cockpit,firebitsbr/cockpit,harishanand95/cockpit,cockpituous/cockpit,SotolitoLabs/cockpit,michalskrivanek/cockpit,harishanand95/cockpit,Thermionix/cockpit,Armstrong1992/cockpit,matobet/cockpit,moolitayer/cockpit,larsu/cockpit,garrett/cockpit,zigitax/cockpit,harishanand95/cockpit,denysvitali/cockpit,denysvitali/cockpit,denysvitali/cockpit,nmav/cockpit,vbatts/cockpit,zigitax/cockpit,evol262/cockpit,haiyangd/cockpit_view,netzvieh/cockpit,stefwalter/cockpit,Scribery/cockpit,martinpitt/cockpit,jscotka/cockpit,andreasn/cockpit,darioajr/cockpit,harishanand95/cockpit,netzvieh/cockpit,zigitax/cockpit,maxamillion/cockpit,cockpituous/cockpit,arilivigni/cockpit,moraleslazaro/cockpit,xhad/cockpit,maxamillion/cockpit,darioajr/cockpit,SotolitoLabs/cockpit,nmav/cockpit,stefwalter/cockpit,andreasn/cockpit,evol262/cockpit,larskarlitski/cockpit,fridex/cockpit,Scribery/cockpit,Thermionix/cockpit,cockpit-project/cockpit,michalskrivanek/cockpit,denysvitali/cockpit,stefwalter/cockpit,haiyangd/cockpit_view,mareklibra/cockpit,stefwalter/cockpit,FireDrunk/cockpit,petervo/cockpit,maxamillion/cockpit,vanloswang/cockpit,vanloswang/cockpit,harishanand95/cockpit,arilivigni/cockpit,cockpit-project/cockpit,stefwalter/cockpit,sgallagher/cockpit,cockpit-project/cockpit,martinpitt/cockpit,larskarlitski/cockpit,cockpit-project/cockpit,matobet/cockpit,dperpeet/cockpit,moolitayer/cockpit,Thermionix/cockpit,michalskrivanek/cockpit,vanloswang/cockpit,arilivigni/cockpit,vanloswang/cockpit,fridex/cockpit,michalskrivanek/cockpit,moolitayer/cockpit,larsu/cockpit,mareklibra/cockpit,jscotka/cockpit,moraleslazaro/cockpit,maxamillion/cockpit,cockpituous/cockpit,Scribery/cockpit,SotolitoLabs/cockpit,Scribery/cockpit,SotolitoLabs/cockpit,cockpituous/cockpit,netzvieh/cockpit,dperpeet/cockpit,garrett/cockpit,deryni/cockpit,mvollmer/cockpit,Thermionix/cockpit,larskarlitski/cockpit,netzvieh/cockpit,vbatts/cockpit,garrett/cockpit,petervo/cockpit,haiyangd/cockpit_view,cockpituous/cockpit,matobet/cockpit,firebitsbr/cockpit,Armstrong1992/cockpit,andreasn/cockpit,maxamillion/cockpit,firebitsbr/cockpit,harishanand95/cockpit,arilivigni/cockpit,stefwalter/cockpit,vbatts/cockpit,petervo/cockpit,arilivigni/cockpit,nmav/cockpit,Thermionix/cockpit,matobet/cockpit,dperpeet/cockpit,arilivigni/cockpit,haiyangd/cockpit_view,petervo/cockpit,SotolitoLabs/cockpit,harishanand95/cockpit,petervo/cockpit,deryni/cockpit,mareklibra/cockpit,michalskrivanek/cockpit,moraleslazaro/cockpit,martinpitt/cockpit,FireDrunk/cockpit,mvollmer/cockpit,deryni/cockpit,vanloswang/cockpit,darioajr/cockpit,xhad/cockpit,haiyangd/cockpit_view,larsu/cockpit,nmav/cockpit,vbatts/cockpit,cockpit-project/cockpit,moraleslazaro/cockpit,vanloswang/cockpit,netzvieh/cockpit,Thermionix/cockpit,andreasn/cockpit,SotolitoLabs/cockpit,zigitax/cockpit,sgallagher/cockpit,larskarlitski/cockpit,sgallagher/cockpit,Scribery/cockpit,larsu/cockpit,firebitsbr/cockpit,firebitsbr/cockpit,sgallagher/cockpit,mareklibra/cockpit,xhad/cockpit,moraleslazaro/cockpit,andreasn/cockpit,moraleslazaro/cockpit,evol262/cockpit,jscotka/cockpit