[FIX] sap.m.Input: documentation and keyboard handling
[FIX] sap.m.Input: documentation and keyboard handling

- note in the documentation that combined use of input type and
  data model formats is not allowed
- fix: suggestedItemSelected event is not fired by keyboard
  navigation over the suggestion list

Change-Id: I3ef4c7956980996f860bef2ef52dba14e631221c

olirogers/openui5,cschuff/openui5,SQCLabs/openui5,SQCLabs/openui5,SAP/openui5,cschuff/openui5,cschuff/openui5,olirogers/openui5,olirogers/openui5,SAP/openui5,SQCLabs/openui5,SAP/openui5,nzamani/openui5,nzamani/openui5,SAP/openui5,nzamani/openui5