add clear notification logic
add clear notification logic

iBcker/phphub,waiducom/phphub,summerblue/phphub,wmydz1/phphub,ventoviro/forum,philip8728/phphub,wyrover/phphub,waiducom/phphub,dut3062796s/phphub,wmydz1/phphub,ventoviro/forum,summerblue/phphub,yaoshanliang/phphub,dut3062796s/phphub,falconchen/phphub,Calinou/phphub,iBcker/phphub,TimeFinger/earth-diary.org,joy696163/phphub,dut3062796s/phphub,wmydz1/phphub,wyrover/phphub,yaoshanliang/phphub,summerblue/phphub,ventoviro/forum,wyrover/phphub,TimeFinger/earth-diary.org,Calinou/phphub,YogiAi/bdicclub,YogiAi/bdicclub,philip8728/phphub,Denniskevin/phphub-1,TimeFinger/earth-diary.org,Denniskevin/phphub-1,falconchen/phphub,joy696163/phphub,philip8728/phphub,falconchen/phphub,waiducom/phphub,yaoshanliang/phphub,Denniskevin/phphub-1,YogiAi/bdicclub,Calinou/phphub,iBcker/phphub,joy696163/phphub