[SQUASHED] Lockscreen Notifications (2/2)

Following commits inside (with minor adaptations)
https://github.com/AOSPAL/android_packages_apps_Settings/commit/10ccffd1ca698aa204479d1c935a3ce3fa47edb2
https://github.com/AOSPAL/android_packages_apps_Settings/commit/17c7bcf21b56a8d977b26f62921d58a3db024a98
https://github.com/AOSPAL/android_packages_apps_Settings/commit/db6757742959c983d2a3477c217fe68e870a6969
https://github.com/AOSPAL/android_packages_apps_Settings/commit/8fc910a7d0a3d559b125706ddf4b65b71bada6c1
https://github.com/AOSPAL/android_packages_apps_Settings/commit/a73649abfce893d99ddc902a04d495970c0f117f
https://github.com/AOSPAL/android_packages_apps_Settings/commit/9b8a305b968018ab4b26fd35720a1e98ccd3852c
https://github.com/AOSPAL/android_packages_apps_Settings/commit/cb18eca4bf63833428b4487c54b1bc3b1b96f66b
https://github.com/AOSPAL/android_packages_apps_Settings/commit/b2ff326f86c6641486dc92de9e02c36a727f5040

Change-Id: Ib13c39cb67839bec92a660000eae23bdb7fdfa30

Conflicts:
	res/values/cr_dimens.xml

Signed-off-by: siracuervo <fl.siracusa@outlook.com.ar>

Conflicts:
	res/values/cr_dimens.xml
	res/values/cr_strings.xml
PEEK (2/2)
THANKS TO @cristianomatos a lot!!!!!!!!!
- Toggle PEEK On/Off
- Make PEEK and LN working togheter as different options
- Put a explanation abaout how these 2 fatures work together

Based on (with some modifications): https://github.com/AOSPA/android_packages_apps_Settings/commit/db85f442ab46ac74011a63f4fb5adc5c3c01df4f
Thanks  to: @BigBrother1984

Change-Id: Ic5496765a3e4a72750588feaf7488415d8292337
Signed-off-by: siracuervo <fl.siracusa@outlook.com.ar>

Conflicts:
	res/values/cr_strings.xml
	res/xml/lockscreen_interface_settings.xml