Bug 846895 - Improving contacts first chunk rendering time

Initializing facebook when needed

Fixing tests
Bug 850256 - Add text prediction to Polish keyboard layout. r=rudyl
Merge pull request #8679 from stasm/850256-polish-prediction

Bug 850256 - Add text prediction to Polish keyboard layout. r=rudyl
Bug 860344 - Define mocks based on document domain

Instead of inferring the document's domain from the `location` object,
query the global `document.domain` string. This approach acheives the
desired behavior for iFrames that do not declare a `src` attribute (in
such cases, `location.toString()` yeilds "about:blank", but
`document.domain` correctly returns the domain of the parent document.
Merge pull request #9088 from albertopq/contacts-first-chunk-imp

Bug 846895 - Improving contacts first chunk rendering time r=arcturus
Merge pull request #9098 from jugglinmike/860344-desktop-helper-in-tests

Define mocks based on document domain