Bug 826872 - Optimize XHR
Bug 828196 - Workaround bug 823418 in Gaia, r=timdream
Merge pull request #7419 from lightsofapollo/calendar-xhr-optimizations

Bug 826872 - Optimize XHR
Merge pull request #7431 from yurenju/issue-828196

Bug 828196 - Workaround bug 823418 in Gaia
Auto-merge from branch 'master'