Fixed a bug where a pinned location would always be used

even if you returned to the page from the settings page or somewhere else, and you had already changed the location, navigating back to it would reset the location, which could get annyoing.
Reword a few translations.

In addition, all german app bar button labels now start uppercase (as in
most other localized apps on my phone). The labels for the unit systems
were updated with the respective units (kilometres/miles).
Fix a bug in the "DJIA Buffer Size" input field

where the user could enter invalid characters (specifically, the dash ('-'), because I didn't know at the time that holding the decimal separator button will give you several options). Now, all characters except digits are rejected.
The change of the InputScope from Digits to Number currently has no effect, but if Microsoft ever handles them differently, I think Number is better fitting than Digits.
Update version number.

This is version 1.1.0.0.