Added basic docs and method list for Controller and Email class.
first version of CD-collection example module
underline-characters escaped
underline-characters escaped
Various small fixes
Adjustments for new template file-extensions
Added tabular information about the previous Contao releases
Links to video-tutorials added
Third part of the video tutorial added
Change single path of image to relative for testing purposes
Revert "Change single path of image to relative for testing purposes"

This reverts commit c88e9daac84946bfc3d3331ec73108c654e7e4e6.
Change single path of image to relative for testing purposes
Change single path of image to relative for testing purposes
Changed paths from absolute to relative
Changed paths from absolute to relative
Changed paths from absolute to relative
Changed paths from absolute to relative
Replace relative URLs to GitHub
Merge branch '2.11' of github.com:JanReuteler/contao-docs into 2.11
Update the descriptions for german screencasts by Tristan Lins