Revert "Merge pull request #12769 from gtorodelvalle/contacts-bug-924903-custom-tag"

This reverts commit a2932738a6c05382e0f17284a3d24542439c9afe, reversing
changes made to 7f240f2da3178b275315790585396629dbe2d756.
Merge pull request #12776 from lightsofapollo/revert-

Revert "Merge pull request #12769 from gtorodelvalle/contacts-bug-924903...
Revert "[924764] Redesign collection header and animations [r=crdlc]"

This reverts commit 99096794d6abd0218539a91c326b5efadd300354.
Bug 830040 - Undiscoverable ui to initiate bluetooth file transfer in music app

Bug 830040 - Undiscoverable ui to initiate bluetooth file transfer in music app

Bug 830040 - remove long-press to share songs and some other updates

Bug 830040 - fix the css issue of cover info

830040 - add share icon with 1.5x and 2x res and fix file type for share activity

830040 - update bluetooth icons

830040 - add locked music functionality

830040 - fix spaces at the end of lines
Merge pull request #11874 from mahsam/830040-music-bluetooth

Bug 830040 - Undiscoverable ui to initiate bluetooth file transfer in mu... r=davidflanagan