Enable user Tag on wiki - Fix #1036
only add scroll event if the sidebar exists
Add Context module
Added watchForElement
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Merge pull request #1052 from matheod/contextModule

Add Context module
Merge pull request #1048 from bronzle/scroll_sidebar_only_when_on_page

only add scroll event if the sidebar exists
Merge pull request #1045 from matheod/wikiTag

Enable user Tag on wiki - Fix #1036