Display up and down arrow for current condition's high/low

Also hide the up/down arrow and current condition's Image views until weather readings are returned.
Merge remote-tracking branch 'origin/master'

Conflicts:
	app/src/main/java/com/ryandejesus/zapposweatherapp/Fragments/DisplayWeatherFragment.java
Formatting weatherforecast to display beautifully. Also how width of views are set programatically.