If the user scrolls or the window is resized, the formerly cached offset
was wrong. This fix makes sure the offset is re-read before showing the
input field.

- Added tooltip with examples
- The quota value returned by the server is now displayed after update
- Fixes #5346

Fixes #5534

Fix br tags

Improve english messages

Tasks app layout was broken since the controls bar is higher now.
This change should hopefully fix other apps using the same layout.

Added jquery.placeholder shim to handle input field placeholders in IE8/9

pass the name of the item source from the browser to the server - no need to get the data via complicated db queries

The "show cruds" button is now embedded into the last label/checkbox
group and wraps with it.

Added ellipsis to prevent long names to exceed the dropdown's width.

This is to prevent conflicts with jquery libs that handle text
placeholders in IE8

- show tooltip when violating naming constraints while typing
- when target filename exists on server fallback to dialog to interrupt the users flow because something unexpected went wrong
- fixes #5062
- also fixes some whitespace and codestyle issues in files js
- uses css selector over filterAttr in touched js files