Updated feature: silent save for tokenanswerpersistance "submit" button wasn't working for all in one surveys
Dev in index.php where submit button is rendered added or for $survey[format] == A so submit button is always displays even if loading a saved survey with incomplete mandatory questions
Dev added IDs for saved submit next and previous buttons so they can be individually styled.

git-svn-id: file:///Users/Shitiz/Downloads/lssvn/source/limesurvey_dev@8917 b72ed6b6-b9f8-46b5-92b4-906544132732