[iOS] Fixes the in-app banner issue.

[LMLayer] Disable Firefox and Edge in unit tests

[ios] ui language add lexical model

Merge branch 'ios-ui-language-add-lm' of https://github.com/keymanapp/keyman into ios-ui-language-add-lm
git push said it was necessary

[Android] Comments out hooks for rotation suggestion.

[LMLayer] Make license consistent with rest of Keyman

[iOS] Utilization of correction/prediction settings

Co-Authored-By: Joshua Horton <joshua_horton@sil.org>

setting prefs slightly conflicted

add lexical model to preferred lm for current language when selected
  in LexicalModelPickerViewController
set the first lexical model of a language, if any, to current when
  the current one is deleted

pass false for update parameter when downloading a lexical model

for  lexical models, as well, now

[iOS] Banner Repair