Changed fallback look and feel back to Plastic3D, and modified code so the theme is set.
Changed fallback look and feel back to Plastic3D, and modified code so the theme is set.

jhshinn/jabref,Braunch/jabref,mairdl/jabref,obraliar/jabref,Mr-DLib/jabref,bartsch-dev/jabref,bartsch-dev/jabref,jhshinn/jabref,bartsch-dev/jabref,zellerdev/jabref,obraliar/jabref,sauliusg/jabref,motokito/jabref,shitikanth/jabref,mredaelli/jabref,mredaelli/jabref,shitikanth/jabref,zellerdev/jabref,motokito/jabref,Siedlerchr/jabref,mredaelli/jabref,sauliusg/jabref,Braunch/jabref,Mr-DLib/jabref,obraliar/jabref,jhshinn/jabref,mredaelli/jabref,shitikanth/jabref,tobiasdiez/jabref,oscargus/jabref,ayanai1/jabref,grimes2/jabref,Mr-DLib/jabref,ayanai1/jabref,mairdl/jabref,JabRef/jabref,tobiasdiez/jabref,shitikanth/jabref,oscargus/jabref,tschechlovdev/jabref,JabRef/jabref,zellerdev/jabref,Braunch/jabref,tschechlovdev/jabref,Siedlerchr/jabref,tschechlovdev/jabref,Siedlerchr/jabref,grimes2/jabref,Braunch/jabref,motokito/jabref,sauliusg/jabref,zellerdev/jabref,tschechlovdev/jabref,tschechlovdev/jabref,ayanai1/jabref,mairdl/jabref,zellerdev/jabref,grimes2/jabref,grimes2/jabref,JabRef/jabref,JabRef/jabref,shitikanth/jabref,jhshinn/jabref,oscargus/jabref,grimes2/jabref,Mr-DLib/jabref,sauliusg/jabref,mairdl/jabref,mairdl/jabref,bartsch-dev/jabref,oscargus/jabref,tobiasdiez/jabref,ayanai1/jabref,Mr-DLib/jabref,Braunch/jabref,motokito/jabref,obraliar/jabref,ayanai1/jabref,motokito/jabref,tobiasdiez/jabref,oscargus/jabref,jhshinn/jabref,obraliar/jabref,mredaelli/jabref,bartsch-dev/jabref,Siedlerchr/jabref