README.md update Ubuntu instructions for Qt 5.5.1

Share item indicator display code between Plan/Fly views

Reset internal state correctly

Switch to Qt 5.5.1 in README

update android versionCode and google play instructions

travis-ci linux and android use Qt 5.5.1 hosted on s3

This fixes rotate images showing up at the wrong time

Tablet boot performance work

Mostly accomplished by delay loading Qml elements

Remove font query from QWidget side of code

For QWidget we will just use the Qt default font sizes. This removes
the extra QQuickWidget creation which breaks boot Qml Profiling

More work on viable MainWindowTest

Unit tests

Too flaky with problems that are likely unit test only problems

Fixing Trashcan Icon

Remove splash screen. Fixes #2028

Fix native function setting in android serial port

Ui changes