Reapplying commit 7962c4e69ee89f0f04a6803d6eb1ffb36ab46dbc to resolve  CURRIKI-5676: login-to-download now has a configurable set of escapes.
paul

Conflicts:
	web/src/main/webapp/skins/curriki8/assets/assetsmacros.vm
	wiki/src/main/pages/CurrikiCode/LoginToDownloadExceptions.txt
	wiki/src/main/pages/CurrikiCode/LoginToDownloadExceptionsProcessor.grv
	wiki/src/main/pages/CurrikiCode/LoginToDownloadExceptionsProcessorView.vm
cherry-picking 7e4124314d6da7a098057b66030d3311e9cdcd9f to resolve CURRIKI-5676.
paul

Conflicts:
	web/src/main/webapp/skins/curriki8/assets/displayers/viditalk_view.vm
reapplying commit 1f67e5478933a973b61c0f02e14f527a2897862a to resolve CURRIKI-5676.

Conflicts:
	wiki/src/main/pages/CurrikiCode/LoginToDownloadExceptionsProcessorView.vm