(bug 38351) Image alignment should follow the page content language

(bug 38351) Image alignment should follow the page content language

The alignment of image thumbs should follow the page content language instead of the wiki content language.
For this it needs the parser context, and because it makes sense to have it as first parameter, I renamed makeImageLink2() to makeImageLink(), the 2 seemed to be redundant anyway.
The old function name keeps the old behaviour, but can be removed quite soon since almost no extension is using it.

Change-Id: I0c35b06a85528dcc43fdd0578dc9b327c495cf4a