Moves AutoSave from Settings to Saving Tab in ControlPanel

For consistency, moves the AutoSave setting from the Settings to the Saving tab in the ControlPanel.

Slightly reworded the AutoSave/Hint.

![saving](https://cloud.githubusercontent.com/assets/97566/5166489/a275ee04-73f0-11e4-99f5-dae94dcf51be.gif)

Also removed all clickable links in Settings which had too much of a
debugging feel for to it to be relevant to an end-user.

![settings](https://cloud.githubusercontent.com/assets/97566/5166427/18273f96-73f0-11e4-8fe9-59e8e38b30b1.gif)

For consistency, and looks, changed all h1 to h2 throughout tabs as was in Settings...

![plugins](https://cloud.githubusercontent.com/assets/97566/5166434/2f9b5e28-73f0-11e4-8ee1-35b7c21ab074.gif)

Had no access to Tools tab, heading needs to be adjusted by someone else, if desired.

![export](https://cloud.githubusercontent.com/assets/97566/5166446/40d1a080-73f0-11e4-94f9-e41b6d5e057a.gif)