Bug 860462 - enable keyboard auto-correction
bug 854609 - clear record before showing connection fail alert

to prevent it overwrite correct connection status because alert popup is
a blocking UI. Status may be changed within the time period.
updated documentation
Merge pull request #9052 from davidflanagan/autocorrect

Bug 860462 - enable keyboard auto-correction r=gwagner
Merge pull request #9124 from ckerschb/docu2

Bug 858158 (final) - [keyboard] document prediction algorithm and make it tuneable
Merge pull request #9109 from evelynhung/issue-854609

bug 854609 - clear record before showing connection fail alert, r=arthur