Merge pull request #294 from tahitiangabriel/bootstrap3

Bootstrap3 : DateTextField - start/end date should use the date time in ISO8601 format
PR #296 - Update url to TB

Update the used versions of depenencies
Replace occurrences of \n in the Html5PlayerTest with the current OS line separator.

A user reported at users@wicket.apache.org that this test fails on Windows.
PR #295 - fixed InputBorder and friends

InputBorder was not adding component to the border
switched position of append / prepend tags
Fixes #298 - Allow th event to bubble up so TB can do its job too
add getters form label, help and feedback
Move newLabel, newHelpLabel and newFeedbackMessageContainer in
onInitialize()