Version 1.3.0

Several new features and bug fixes. Details below.

New features
Interface to configure Static / DHCP settings, with an optional static fallback. Related to #46 #67.
Added a web-based remote shell, available from the System menu (#119).
Added support for themes (#115) with two new themes: HackerNews and Terminal.
Optional Hostapd logging (#133) to assist with troubleshooting. Related to #132.

Bugfixes
Fixed fastcgi-php setup for fresh installs.
Updated install/uninstall scripts. Resolves #120.
Create RASPI_ADMIN file if it doesn't exist. Resolves #116.