New ASUI and settings test binaries.

• fix: don't clip last X usage hours to 24
• fix: restore control panel screen settings on shutdown and battery_empty signals
• horizontal lines every 10% on battery graph
• merged the n800_lock_mode and the new softpoweroff_mode into a power_action setting
• used same alignment for all labels in bottom area of battery graph
• screenshot button that provides an interface for the screenshot-tool package

asui dt;asui it;asui ds;asui is to download and install both.

Two settings were merged into a new one so if you had changed either you'll need to go to the bottom of settings:button modes and update it.

screenshot button

• a long press anywhere in the button uses screenshot-tool to take a delayed screenshot
• the plus and minus buttons increment and decrement the delay
• run apt-get install screenshot-tool as root to use this feature
• images are stored in /home/user/MyDocs/.images/ or N8x0/Images

Long press takes screenshot when used anywhere inside the button, which means the delay buttons can't auto-repeat when they are long pressed.