Remove icon templates because Jolla released official templates

 - Jolla official templates are at https://sailfishos.org/apps_icons.html
Show a numpad for the TextFields, not the full keyboard.
Add a link to the Jolla app icon templates
Fix spelling of "subtract"; the previous fix missed these few label names where it was used in an abbreviated form.
Removing the other, unused SailCalc.qml, which apparently is a leftover from the past.
Merge branch 'remove-icon-templates' of https://github.com/karip/helloworld-pro-sailfish into feb-pulls
Merge branch 'spellingfix2' of https://github.com/lanurmi/helloworld-pro-sailfish into feb-pulls
merged dulication removal
Better layout and removal ob BackgroundItem made it not possible to click on a row instead of a text edit
Use Theme colors in a hyperlink
bump version number for the release
Adjust package file permissions to what harbour validator wants
Build for 0.5-5 harbour submission