integrate the own stared pages into the sidebar

SPR-742: help toggle in content

SPR-742: edit buttons

styled the menu button

SPR-835 only show an icon until hover

complete refactor of the sidebar behaviour javascript RES-754

Now all toggling of the sidebar and the related menus is done through
the same click handler. HTML has been unified. All sidebar related

complete refactor of the sidebar behaviour javascript RES-754

Now all toggling of the sidebar and the related menus is done through
the same click handler. HTML has been unified. All sidebar related
content is now in a single include file instead of several. Icons for
the site tools user tools and trace have been added.

The CSS for the whole sidebar still has to be refactored.

show more ...