Don't install Aruion IDE from official Ubuntu repositories, the version is too old and doesn't allow easy configuration of new boards. The better is to download tar aechive from official IDE pages and follow installation instructions (http://ubuntuhandbook.org/index.php/2015/11/install-arduino-ide-1-6-6-ubuntu/)
Encryption https://github.com/kakopappa/arduino-esp8266-aes-lib https://primalcortex.wordpress.com/2016/06/17/esp8266-logging-data-in-a-backend-aes-and-crypto-js/ https://github.com/kakopappa/arduino-esp8266-aes-encryption-with-nodejs
Add following to Preferences -> Additional Boards Manager URLs: http://arduino.esp8266.com/versions/2.3.0/package_esp8266com_index.json and
install ESP8266 boards via Tools -> Board -> Boards manager
SCL->D1
SDA->D2
VCC->VV
GND->GND
Gotchas: set contrast on the LCD display (solution: connect power to 5V pin instead of 3V pin)