Merge pull request #8641 from gasolin/issue-838040

Bug 838040 - allow access of bookmark menu from the bookmark tab, r=bfrancis(cherry picked from commit 3ec87491b12bbc079fbd251846778b7ee9277986)
Merge pull request #8619 from etiennesegonzac/dialer-iframe-removal

Bug 849929 - Removing the contacts tab iframe from the critical launch path(cherry picked from commit 8333996b0bd0ac3f186d4b399aca074772299b31)
Merge pull request #8186 from jaoo/836257

Bug 836257 - Be aware of GECKO_CARDSTATE_UNKNOWN new card state in Gaia ...(cherry picked from commit c76e97d635f9a6205a9a3933a79e90e27b25f4c9)