Moved all remaining usages of the text() mixin to textWithValue()
Removed text mixin, renamed textWithValue to text
Moved all remaining usages of the textReadonly() mixin to textReadonlyWithValue()
Removed textReadonly mixin, renamed textReadonlyWithValue to textReadonly
Removed textarea mixin because it is not used any more.
Renamed textareaWithValue to textarea
Changed hightextarea mixin so that it now takes a value.
Moved all remaining usages of the hidden() mixin to hiddenWithValue()
Removed hidden() mixin, renamed hiddenWithValue to hidden
Now the date and time mixins require a value.
Now colorPicker and colorPickerForTable accept a value, not an object.
We need to evaluate the member id before setting it as announcement author.