updated moment dep in bower from max 2.7 to max 2.8, to make it in sync with package.json
updated moment dep in bower from max 2.7 to max 2.8, to make it in sync with package.json

felippenardi/angular-moment,saike/angular-moment,bluecitymoon/angular-moment,nicholasruggeri/angular-moment,ackimwilliams/angular-moment,borkom/angular-moment,masious/angular-moment-jalaali,leocaseiro/angular-moment,Jeremy017/angular-moment,masious/angular-moment-jalaali,urish/angular-moment,kpgarrod/angular-moment