Bug 1007568 - Follow symlinks when copying apps into STAGE_DIR, r=yurenju

Directories under GAIA_APPDIRS might contain symlinks
(e.g. outoftree_apps). When copying the symlinked apps
into STAGE_DIR without -L option, clear-stage-app
will remove the files in the target directory.
Bug 1010768 - Intermittent fail of test_settings_cell_data.py
Bug 989394 - Intermittent failing test: Contacts > Form Click phone number Can create custom label r=jmcf
Merge pull request #19213 from KevinGrandon/bug_989394_contacts_form_test_intermittent

Bug 989394 - Intermittent failing test: Contacts > Form Click phone number Can create custom label
Merge pull request #19167 from lhadji/1007568/copy-symlink

Bug 1007568 - Follow symlinks when copying apps into STAGE_DIR, r=yurenju
Bug 1010642 - [Home2] Implement new drop shadows for app icon labels r=me
Merge pull request #19281 from AndreiH/bug1010768

Bug 1010768 - Intermittent fail of test_settings_cell_data.py
Bug 1010553 - Create a gaia-switch web component r=wilsonpage
Merge pull request #19260 from KevinGrandon/bug_1010553_gaia_switch_component

Bug 1010553 - Create a gaia-switch web component
Revert "Merge pull request #19167 from lhadji/1007568/copy-symlink"

This reverts commit 4d7952a408a90ff9bcee40ac1836d8c5c4a4f252, reversing
changes made to f138172949ebce82084c986867c1c6dfe66bcf3d.