Development settings: Remove icon from root dialog

* Other dialogs in development settings don't have an icon anymore

Change-Id: If7784cf8d758ccce6d8dd3c2bae49ec8c6303336
Clean up / Still not fixed Battery % toggle...grrr
Fix Battery % and Make it a Switch instead of a checkbox(Ridiculous to begin eith)
Add:Toggle Switch to Time/Date
Settings: Accessibility - We want consistence...change from CheckBoxPreference to SwitchPreference

Google changed it on all main settings. It does not make sense that on system settings
the old CheckBoxes are still used.

This commit changes all CheckBoxes in accessibility settings to Switches

Same needs to be done for Date and Time and Developer Settings

Change-Id: I335285270bcb8fa5e6e86f32a099f901e6d44d29