Security update for MozillaFirefox, MozillaFirefox-branding-SLE

This update for MozillaFirefox, MozillaFirefox-branding-SLE fixes the following issues: Changes in MozillaFirefox: Security issues fixed: - CVE-2019-15903: Fixed a heap overflow in the expat library (bsc#1149429). - CVE-2019-11757: Fixed a use-after-free when creating index updates in IndexedDB (bsc#1154738). - CVE-2019-11758: Fixed a potentially exploitable crash due to 360 Total Security (bsc#1154738). - CVE-2019-11759: Fixed a stack buffer overflow in HKDF output (bsc#1154738). - CVE-2019-11760: Fixed a stack buffer overflow in WebRTC networking (bsc#1154738). - CVE-2019-11761: Fixed an unintended access to a privileged JSONView object (bsc#1154738). - CVE-2019-11762: Fixed a same-origin-property violation (bsc#1154738). - CVE-2019-11763: Fixed an XSS bypass (bsc#1154738). - CVE-2019-11764: Fixed several memory safety bugs (bsc#1154738). Non-security issues fixed: - Added Provides-line for translations-common (bsc#1153423) . - Moved some settings from branding-package here (bsc#1153869). - Disabled DoH by default. Changes in MozillaFirefox-branding-SLE: - Moved extensions preferences to core package (bsc#1153869).