download export validation added

1. form validation added
2. file name invalid message added
added msg key for clean index cache
added directive ipInputBox
download fixed

added validation check
download validation added

disabled added & required added
added some description, removed deprecated functions from serviceSession.
update document
fixed query download layer

1. added json message
2. added validation
updated directive ipInputBox
updated directive ipInputBox
fixed a bug about missing flag
Merge branch 'master' into uidev
Merge branch 'uidev'