added radiobutton
Marked up inline code in repo readme.
Merge from 21.6.13
described new tabs in options dialog
updated the options dialog
reviewed gentle gis introduction
Merge pull request #93 from chrisberkhout/master

Marked up inline code in repo readme
finished options dialog, some questions left
started adapting the chapter to the new styl tab
changed order of sections in style tab
link fix
worked on style tab
Merge branch 'mastdfar' of github.com:qgis/QGIS-Documentation
section style tab updated
2.0 manual update : Print Composor / Composition tab