LanguageManager documentation fixes
Fix for the StatusBar line count grammar error by changing the string when the file has 1 line
Replace .isResolved & .isRejected with .state
Merge pull request #3584 from TomMalbran/tom/fix-issue-3583

Fix #3583: There is a grammar error with the string "1 lines"
Updated by ALF automation.
Merge pull request #3668 from adobe/alf

ALF Automation
Merge remote-tracking branch 'upstream/master' into deprecated_deferred_methods
Revert changes of .isRejected & .isResolved
Merge pull request #3665 from TuckerWhitehouse/deprecated_deferred_methods

Replace .isResolved & .isRejected with .state
Merge pull request #3399 from DennisKehrig/dk/language-manager-doc-fixes

LanguageManager documentation fixes