Fixes #1120

[Android] Fix crashes when input connection or package name is null

This fixes another crash on Crashlytics when the PackageActivity has a null package name.

Cleaning up the console log in #837 introduced a bug when the InputConnection in KMManager is `null` and build variant is `release`.

[Mac] #1090 - Fixed follow-on bug (when Shift is pressed)

Previous fix over-corrected by preventing a non-virtual rule from being used for normal shifted characters. For example, if a rule was supposed to fire for a left curly brace, it would not fire if the rule contained '{' instead of [SHIFT K_LBRKT].

[Mac]#1090 - Fixed problem of selecting wrong rule

I attempted unsuccessfully to find an actual failing case so I could add a unit test for this. Even though I couldn't, I agree that it is the correct logic, so I'm making the change as Marc suggested.

[iOS] Removed unnecessary UIFileSharingEnabled flag

[iOS] #1045,#1046 - Quick fix for OSK layout: disable animation

[Mac] Fixed last stable version number in history.md

[Mac] #1079 - Removed OSK help button for macOS < 10.10 to prevent crash

[Mac] Fixes #1059 - Don't call unavailable selectors on old OS versions

[ios] Remove reference to Android in history to satisfy App Store review

[web] If a layer has lower row count to default layer in embedded mode, then Keyman throws an error.