Settings: Make location switch actually do something

the boolean state for enableStockMode is inverted, and in stock mode, the enabler would be on all the time, even while all of the other enablers were paused... so I just got rid of the condition.

This bug should not have neem mine to fix. You're welcome.

Change-Id: I82490da3e6e6670c089416caaaecd4ac6f18a9b9
Settings: Always show Developer and Performance headers to the owner user.

Change-Id: Iadb960b0d758d6584c29e2cfc1efd5f02e47c350
[TEMP] StockMode: make string resources more accurate

Change-Id: I3ff92047252a0c20ab3cd19fd9a459f98ce77a9e