[Android] [Windows] [iOS] Merge build of keyboards for FirstVoices apps

[ios] reload table data so deletion or addition shows immediately

[Web] "Enable Predictions" as sole factor in for activating predictive banner

[iOS] Slide-deletion for keyboards via Settings menu

[Developer] Update documentation on UTF-8 BOM handling; write test.

[Mac] Fix offset mismatch for index() when in a rule containing if() statements

[iOS] UI Toggle Constraints

[ios] one language or count languages

[Developer] Prevent keyboard files with many warnings clobbering build reports by stopping reports after 100 messages

[Developer] Fixes #1919. Prevent keyboard files with many warnings clobbering build reports by stopping reports after 100 messages

[Web] Spacebar captioning fix

[LMLayer] Fixes double-space bug.

[Android] Settings UI enhancement

[Android] Suggestion text misalignment on tablets