add test for empty rev in ml() and wl()

add test getlastrevisionat

improve unittests getrelativerevision. Bit code reformatting unit tests

fix not updated call, renaming

refactor PageRevisionLog into Media- and PageChangelog extending Changelog

Improved isCurrentRevision(), tests included

Add unit tests for getRelativerevision

Update changelog unit tests

Fix the media usage index to include local links

ensure locale is set back to the original value

skip FS#2867 test if \s doesn't match \xA0 after attempting to change the locale

unittests for auth_loadACL

make sure HTTP test uses HTTP only and doesn't get redirected

more verbosity in test case

escaped another $ in mailer test

add tests for usernames with 2 & 3 byte utf8 characters

Fix the indexer indexing test case (changed the data but not the result)

Fix FS#2854: Treat numerically different keys as different

additional auth_nameencode tests (apostrophe & backslash)

swap order ot test parameters to match expected,actual as per documentation & test output

update tests for use with <THEAD> changes

Wrap thead around 1st row, when 1st cell at 1st row is tableheader. Implements FS#1764

remove '&' reference operator from metadata test, not required in php5

escape '$' in mailer test strings

fix signature mail unittest, and improve some signatures info plugin