Merge pull request #1 from qgis/master

Forked source update request
Update foreword.rst
Update modeler_hydro_calculator.rst
Update answers.rst
Merge pull request #250 from uprel/master

Added server logging part
Merge pull request #252 from uprel/master

Fix formatting
Better description of 3rd party applications installation
Removed an obsolete reference to "Publish to web"
Merge pull request #253 from elpaso/master

Removed an obsolete reference to "Publish to web"
added example using QGIS startup parameter --code to introduction
Quick field calc bar (like Excel) in attribute table
Merge pull request #255 from yjacolin/quickCalcBar

Quick field calc bar (like Excel) in attribute table
Fix #248
Merge pull request #256 from yjacolin/248

Fix #248
Merge pull request #254 from diethard2/master

added example using QGIS startup parameter --code to introduction
Fix dead link and typo from #234
Merge pull request #257 from yjacolin/deadLinks

Fix dead link and typo from #234
Merge pull request #244 from Qgis-Tr-kr/master

Fix broken image links in Training Manual
Explain live update of the color button for print composer.
Merge pull request #258 from yjacolin/master

Explain live update of the color button for print composer.