comparisions with prefix/postfix need to use them

fix XSS problem in entry validation

Don't show struct form for locked pages

Only show struct editform if we have at least edit rights

Add tests for getData* and skipEmpty parameter

GitHub Issue #35

Add tests for clearData() function

GitHub Issue #35

completed revert test

simplified test

no need to repeat a value

added tests for testing translatio initialisation #35

added field hints #29

renamed translation to label

we will have more translated things

have proper default label for pageid columns

adjust header style. fixes #49

automatically change the type for existing Image fields

added tests for PDF and Video

more Media type tests

renamed classes to match type

added media type validation tests

renamed Image to Media and added mime type validation #38

added some tests for user type #35

moved mock objects to their own namespace #35

we may want to reuse them in different tests

made methods public again, protected was wrong

fix some assignment bugs and add tests #35

finish diff test #35

make Value more robust and test it #35