[en] Add doc about ignoreCase for assertContains on string (4.2 only)
[fr] Add doc about ignoreCase/ignorerLaCasse for assertContains on string (4.2 only)
[en] [fr] Add doc about ignoreCase/ignorerLaCasse for assertContains on string (versions 3.3 to 3.5 en only, versions 3.6 to 4.1 en + fr)
Remove trailing whitespaces
[en] Remove doc for pre-ignoreCase era and add support bit in doc for 3.4
[en] Fix markup typo
Merge pull request #207 from astorije/master

Add ignoreCase doc for assertContains