Wipe and re-create database on downgrade.

Not a very common situation but should fix some errors that could
 arise from flashing an old ROM over a new one, without wiping data.

Change-Id: I27f2a00396761105987830921bb3f8cb339d2171

 Dialer AutoComplete: Bootstrap the onUpgrade for the SettingsProvider

to automagically create this setting and enable it by default.

PS2: Delete evil whitespace
PS3: Forgot to update the DB Version

Change-Id: I58eee488d1dee4941713d5cc4503f2f2861462d5