adds styling for widget dropdown menu
adds styling for widget dropdown menu

anthcp/cdap,caskdata/cdap,chtyim/cdap,anthcp/cdap,caskdata/cdap,hsaputra/cdap,caskdata/cdap,chtyim/cdap,anthcp/cdap,caskdata/cdap,hsaputra/cdap,mpouttuclarke/cdap,mpouttuclarke/cdap,caskdata/cdap,mpouttuclarke/cdap,mpouttuclarke/cdap,hsaputra/cdap,mpouttuclarke/cdap,hsaputra/cdap,chtyim/cdap,anthcp/cdap,chtyim/cdap,hsaputra/cdap,chtyim/cdap,anthcp/cdap,chtyim/cdap,caskdata/cdap