OO-2190: upgrade contact element with version 1, by copy remap the groups and areas of deprecated configurations too

OO-848: extended postCopy() method with source and target Course to get the copy of a whole course working

OO-848: enhance the interface of course nodes to do a post copy processing different from the import one

OO-1284,OO-998: wording, fix managed group which override configuration, fix validation method of contact course element if deployed from course

- fixed error-clearing issue
- de_i18nkeys
- wrong collected recepient adresses

OO-1068: fix 2 javascripts errors in IE (navbar in full screen hasn't any width, leading comma), fix an HTML error in contact form

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branch : bps