added css classes to form fields in search block default template so they can be styled more easily via theme CSS
added css classes to form fields in search block default template so they can be styled more easily via theme CSS


Former-commit-id: c5d2c169e6c31059fe00a97916dc8aea47d4e709
deek87/concrete5,mlocati/concrete5,deek87/concrete5,acliss19xx/concrete5,MrKarlDilkington/concrete5,deek87/concrete5,haeflimi/concrete5,mainio/concrete5,mlocati/concrete5,rikzuiderlicht/concrete5,concrete5/concrete5,hissy/concrete5,hissy/concrete5,deek87/concrete5,olsgreen/concrete5,triplei/concrete5-8,a3020/concrete5,mlocati/concrete5,mlocati/concrete5,hissy/concrete5,rikzuiderlicht/concrete5,KorvinSzanto/concrete5,mainio/concrete5,MrKarlDilkington/concrete5,jaromirdalecky/concrete5,olsgreen/concrete5,acliss19xx/concrete5,mainio/concrete5,olsgreen/concrete5,biplobice/concrete5,biplobice/concrete5,jaromirdalecky/concrete5,KorvinSzanto/concrete5,haeflimi/concrete5,KorvinSzanto/concrete5,triplei/concrete5-8,jaromirdalecky/concrete5,biplobice/concrete5,concrete5/concrete5,rikzuiderlicht/concrete5,concrete5/concrete5,acliss19xx/concrete5,jaromirdalecky/concrete5,biplobice/concrete5,concrete5/concrete5,a3020/concrete5,hissy/concrete5,haeflimi/concrete5,haeflimi/concrete5,triplei/concrete5-8,MrKarlDilkington/concrete5