Issue #2147973 by gvso, id_matvey, Gordogost, andrii zahura, naveenvalecha, snap_x: Drupal 8 version
Issue #2199267 by jfhovinne: Button does not appear in IE8.
Issue #1879202 by stewart.adam: Context parameter not respected in Drupal.behaviors callback.
fixing ajax error
Issue #1490242 by FATALIST: fixing not valid markup
Fixing ajax bugs
Issue #1484728 by gopisundar: Arrow picture not displaying while the mouse button is over the picture on IE8-9
Issue #1490242 by FATALIST: Not valid markup fix
adding configure directive to .info file
Issue #1468604 by Kvark:Changing label and preview in module configuration
Issue #1413088 by Blackice2999 : adding own permissions
Fix for CSS aggregation.
adding enable on administration theme option
bug fix:#link outside of the #back-top block and empty paragraph at the end of page
correction of setting word
correction of setting word in module description
Adding some module settings
setting opacity to 50% on mouse out
adding display label option
Adding settings for mouse over/out backgroud color
arrow and link size changed
adding positionning setting
Arrow now visible in all pages
using jquery append function to make back to top link appears in all pages
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