mozilla-b2g/gaia — pull request #7848 by albertopq (2013-01-29 14:25:28+00:00)
Title: Bug 835742 - Improving contacts list rendering performance

- Avoiding unneeded querySelectors, caching elements
- Only checking if the element is rendered when reloading the list (not 1st time render)
- Avoiding force repaints when reloading the list (not 1st time render)