[webcontroller] Don't show an action sheet if there are no actions.
[webcontroller] Don't show an action sheet if there are no actions.

Don't add copy and open actions if there is no url.

Closes #304.

ycaihua/nimbus,dieface/nimbus,dachaoisme/nimbus,tranhieutt/nimbus,jverkoey/nimbus,Arcank/nimbus,marcobgoogle/nimbus,jverkoey/nimbus,dachaoisme/nimbus,cnbin/nimbus,bogardon/nimbus,JyHu/nimbus,bogardon/nimbus,bogardon/nimbus,DreamHill/nimbus,WeeTom/nimbus,Guokr1991/nimbus,andaluz/nimbus,tranhieutt/nimbus,treejames/nimbus,LcongGitHub/nimbus,compositeprimes/nimbus,panume/nimbus,bangquangvn/nimbus,andaluz/nimbus,ycaihua/nimbus,michaelShab/nimbus,hanangellove/nimbus,chanffdavid/nimbus,mohsinalimat/nimbus,michaelShab/nimbus,marcobgoogle/nimbus,quyixia/nimbus,dachaoisme/nimbus,Arcank/nimbus,zaichang/nimbus,JyHu/nimbus,Arcank/nimbus,zilaiyedaren/nimbus,Guokr1991/nimbus,chanffdavid/nimbus,treejames/nimbus,bogardon/nimbus,compositeprimes/nimbus,xiaohongjun0509/nimbus,SuPair/nimbus,Arcank/nimbus,bangquangvn/nimbus,SuPair/nimbus,dmishe/nimbus,zaichang/nimbus,zilaiyedaren/nimbus,dachaoisme/nimbus,kisekied/nimbus,cnbin/nimbus,zaichang/nimbus,zaichang/nimbus,chanffdavid/nimbus,liuwu/nimbus,kviksilver/nimbus,jverkoey/nimbus,treejames/nimbus,panume/nimbus,veue/nimbus,WeeTom/nimbus,ycaihua/nimbus,treejames/nimbus,xiaohongjun0509/nimbus,quyixia/nimbus,marcobgoogle/nimbus,DreamHill/nimbus,quyixia/nimbus,xiaohongjun0509/nimbus,weiyanwu1984/nimbus,weiyanwu1984/nimbus,dmishe/nimbus,LcongGitHub/nimbus,dmishe/nimbus,dmishe/nimbus,zilaiyedaren/nimbus,michaelShab/nimbus,marcobgoogle/nimbus,liuwu/nimbus,bogardon/nimbus,Arcank/nimbus,JyHu/nimbus,kviksilver/nimbus,zilaiyedaren/nimbus,zilaiyedaren/nimbus,cnbin/nimbus,SuPair/nimbus,liuwu/nimbus,JyHu/nimbus,DreamHill/nimbus,xiaohongjun0509/nimbus,jverkoey/nimbus,chanffdavid/nimbus,bangquangvn/nimbus,kisekied/nimbus,compositeprimes/nimbus,quyixia/nimbus,weiyanwu1984/nimbus,kviksilver/nimbus,michaelShab/nimbus,compositeprimes/nimbus,tranhieutt/nimbus,kisekied/nimbus,WeeTom/nimbus,compositeprimes/nimbus,dachaoisme/nimbus,SuPair/nimbus,panume/nimbus,cnbin/nimbus,bogardon/nimbus,mohsinalimat/nimbus,kviksilver/nimbus,kisekied/nimbus,kviksilver/nimbus,marcobgoogle/nimbus,JyHu/nimbus,michaelShab/nimbus,veue/nimbus,ycaihua/nimbus,andaluz/nimbus,quyixia/nimbus,chanffdavid/nimbus,panume/nimbus,mohsinalimat/nimbus,mohsinalimat/nimbus,panume/nimbus,dieface/nimbus,zaichang/nimbus,cnbin/nimbus,dachaoisme/nimbus,Guokr1991/nimbus,DreamHill/nimbus,jverkoey/nimbus,treejames/nimbus,bangquangvn/nimbus,panume/nimbus,WeeTom/nimbus,dieface/nimbus,kisekied/nimbus,liuwu/nimbus,Guokr1991/nimbus,tranhieutt/nimbus,bogardon/nimbus,Arcank/nimbus,DreamHill/nimbus,SuPair/nimbus,DreamHill/nimbus,marcobgoogle/nimbus,hanangellove/nimbus,weiyanwu1984/nimbus,cnbin/nimbus,marcobgoogle/nimbus,ycaihua/nimbus,treejames/nimbus,LcongGitHub/nimbus,tranhieutt/nimbus,chanffdavid/nimbus,dieface/nimbus,dmishe/nimbus,JyHu/nimbus,Guokr1991/nimbus,andaluz/nimbus,veue/nimbus,mohsinalimat/nimbus,kviksilver/nimbus,andaluz/nimbus,jverkoey/nimbus,bangquangvn/nimbus,Arcank/nimbus,Guokr1991/nimbus,dmishe/nimbus,liuwu/nimbus,zaichang/nimbus,kisekied/nimbus,michaelShab/nimbus,hanangellove/nimbus,LcongGitHub/nimbus,veue/nimbus,dieface/nimbus,xiaohongjun0509/nimbus,hanangellove/nimbus,LcongGitHub/nimbus,hanangellove/nimbus,SuPair/nimbus,mohsinalimat/nimbus,quyixia/nimbus,quyixia/nimbus,dieface/nimbus,compositeprimes/nimbus,JyHu/nimbus,WeeTom/nimbus,weiyanwu1984/nimbus,zilaiyedaren/nimbus,tranhieutt/nimbus,xiaohongjun0509/nimbus,compositeprimes/nimbus,WeeTom/nimbus,LcongGitHub/nimbus,weiyanwu1984/nimbus,andaluz/nimbus,veue/nimbus,bangquangvn/nimbus,ycaihua/nimbus,jverkoey/nimbus,hanangellove/nimbus,liuwu/nimbus