Portuguese, trackpad controls and a controls page

New

• phpFarm now speaks Brazilian Portuguese. It is picked automatically if your system is set to Portuguese, or you can choose it in Settings.
• New Controls page in Settings: every mouse gesture and keyboard shortcut in one place.
• Trackpad support: drag with the left button to move the map, zooming with two fingers is now smooth, and Q/E rotate, WASD or the arrow keys pan.
• A green speech bubble appears above the delivery van when new orders arrive.
• The reference now lists how long each plant takes to grow and what it is worth, right under plant().
• Code editor: Shift+Tab outdents, Tab indents a whole selection.
• Lines with a warning are now marked in yellow next to the line number.

Fixes

• Long file names no longer overlap the buttons in the file list.
• The text on the two start options in the welcome window is now left-aligned.
• Starting the game outside the Steam client now restarts it through Steam, so achievements and the Supporter Pack always work.