Added the help message for the create keypair page
Added the help message for the import keypair page
Added the help message for the delete keypair
Added the help messages for the ip address detail view page
Added the associate IP help message
Added the tag help message on the image datail view page
Removed unnecesary div blocks
Added the help messages for the snapshot detail view page
Added the create snapshot help message
Change <pre> to <code>
Removed <span> tags from the help messages
Merge pull request #98 from eucalyptus/GUI-214

Gui 214 Add help messages