Some post-merge cleanup for automatic brightness adjustment

- Remove some unused strings
- Use (device-dependant) minimum brightness level (as calculated by
  DisplayPowerController) as '0%' instead of the actual value 0.

Change-Id: I79123d2421c9ab35fa0f1808d82d785463e8fbaa
Settings: fix incorrect value in autobrightness adjustment

If the user drag the progress bar below the min value, the incorrect
setting will be saved since seekBar.setProgress code path does not
return to the "getItem(pos).backlight = ..." line.

Change-Id: I4796e22ba9c44315be92de4040f6cd8451bdf153
Overhaul auto-brightness level UI.

This changes a few things:
- Don't imply a 'bucket' type of algorithm is used by showing an ambient
  brightness range for each line
- Allow manually entering the screen brightness
- Add a preview window for the cubic spline interpolation
- Add a help text

JIRA:CYAN-612
Change-Id: I64274280872b9fe4f6fdc368d654aca81e0a4e0c

Conflicts:
	res/values-af/strings.xml
	res/values-da/cm_strings.xml
	res/values-de/strings.xml
	res/values-el/strings.xml
	res/values-es/strings.xml
	res/values-fr/cm_strings.xml
	res/values-hu/cm_strings.xml
	res/values-it/cm_strings.xml
	res/values-ja/strings.xml
	res/values-ko/strings.xml
	res/values-nl/cm_strings.xml
	res/values-pl/cm_strings.xml
	res/values-pt/cm_strings.xml
	res/values-pt/strings.xml
	res/values-ru/strings.xml
	res/values-uk/strings.xml
	res/values-zh-rCN/strings.xml
	res/values/cm_strings.xml
	res/values/colors.xml
	res/values/dimens.xml
Correctly restore brightness customize dialog hierarchy.

This is especially important when rotating the device.

Change-Id: Iaf1ceb46943e9d0a171d6a75d3d446dbec205095

Conflicts:
	src/com/android/settings/BrightnessPreference.java
Make menu item title and help text consistent.

Change-Id: Ia14fbb200fbc19bcdc654bd542dbe3ba15fbf6ea

Conflicts:
	res/values-af/cm_strings.xml
	res/values-da/cm_strings.xml
	res/values-de/cm_strings.xml
	res/values-el/cm_strings.xml
	res/values-es/cm_strings.xml
	res/values-fr/cm_strings.xml
	res/values-hu/cm_strings.xml
	res/values-it/cm_strings.xml
	res/values-ja/strings.xml
	res/values-ko/cm_strings.xml
	res/values-nb/cm_strings.xml
	res/values-nl/cm_strings.xml
	res/values-pl/cm_strings.xml
	res/values-pt/cm_strings.xml
	res/values-ru/cm_strings.xml
	res/values-uk/strings.xml
	res/values-zh-rCN/cm_strings.xml
	res/values/cm_strings.xml
Improve brightness curve preview

- Avoid log spamming
- Add a little margin around the grid so outer control points aren't cut

Change-Id: Idb6cd2773186f9e7011486dc62f21e2fab85e245
Re-add auto brightness configuration UI (2/2).

Change-Id: I6c56a48fa2145c58a5f203ed56051451ef3f977d

Conflicts:
	AndroidManifest.xml
	res/values/cm_strings.xml
Allow changing auto-brightness responsitivity.

Change-Id: Icf62db26735f9ab7ad63e750a1824eb7823c3d70

Conflicts:
	res/layout/vibrator_intensity.xml
	res/values/cm_arrays.xml
	res/values/cm_strings.xml
	src/com/android/settings/BrightnessPreference.java

Conflicts:
	res/values/arrays.xml
	res/values/strings.xml