Merge pull request #20734 from crdlc/bug-1026058

Bug 1026058 - [Vertical Homescreen] Edit Mode - Delete icon is jagged and not sharp
Bug 970824 - [LockScreen][System] Stop directly use 'lockScreen.locked'
Bug 1016241 - [Collections App] Populate collections with installed apps:
 * add cName (canonicalName) to collections
 * new HomeIcons object
Merge pull request #19990 from EragonJ/bug-996417

Bug 996417 - [Settings] Make sure we would render current level of
Merge pull request #20428 from mnjul/bug_1024395_lockscreen_color_overlay_by_bug_973443

Bug 1024395 - Lockscreen color overlay not working due to bug 973443. r=arthur.chen
Merge pull request #20694 from zacc/bug_1000037

Bug 1000037 - Refactor and re-enable test_import_contacts_gmail.py
Bug 1020867 - Don't allow user to turn on wifi hotspot when airplane mode is enabled
Merge pull request #19960 from yzen/bug-1019362

Bug 1019362 - adding a number of gaia ui tests for the first time use ap...
Merge pull request #20552 from cctuan/1024933

Bug 1024933 - [Text Selection] Utility bubble's shadow improvement
Bug 1027547 - [Vertical Homescreen] [Smart collections] Context menu is displayed long pressing empty spaces
Bug 1025940 - Update self.data_layer.sim_contacts to read SDN Contacts
Merge pull request #20540 from snowmantw/issue970824

Bug 970824 - [LockScreen][System] Stop directly use 'lockScreen.locked'
Merge pull request #20686 from bebef1987/sim_contacts

Bug 1025940 - Update self.data_layer.sim_contacts to read SDN Contacts
Bug 1026273 - [Vertical Homescreen] Smart collections are sometimes added in a random order
Merge pull request #20647 from EragonJ/bug-1020867

Bug 1020867 - Don't allow user to turn on wifi hotspot when airplane mod...
Bug 1026153 - [Vertical homescreen] Icon gets stuck while dragging and pressing power button
Merge pull request #20720 from ian-liu/settings/wifi/bug1023738_file_not_scan_while_init_select_certificate_file_page

Bug 1023738 - [Wifi] User cannot import certificate when entering Import-certificate in Manage-certificates page in first time, r=ej
Merge pull request #20551 from huchengtw-moz/bug-1015846

Bug 1015846 - [Vixen][Tablet] Camera preview rotate 90 degrees in camera..., r=dmarcos
Merge pull request #20231 from EverythingMe/1016241-populate

Bug 1016241 - [Collections App] Populate collections with installed apps
Merge pull request #20341 from EragonJ/bug-1023682

Bug 1023682 - [Settings] The clear bookmarks data button is missing