On submit succes, if we don't navigate away from page, apply possible form updates, as received from the server.

QfqForm.js: Form refresh is now known as form update. Form updates receive more elaborate response from server.

Refactored Element.js, i.e. deleted it, since it has been degenerated to a proxy object, with no added value.

Added QfqNS.Element.getElement() function. Elements can now be set readonly/disabled. Renamed QfqNS.Element.Input to QfqNS.Element.Text.

Delete Button: When user confirms deletion of record, all buttons will be disabled and form removed.

BuildFormBootstrap: fixed typo in class id pills
QfqForm.js: rewrote logic after press 'save'

QfqPage.js: history: do not create a history entry for each tab click, instead just set the current history to the current tab, i.e. the back button won't take the user thru the tab history.

Alert.js: Click handler on message will only be installed IF no buttons are to be displayed. If buttons are displayed, the buttons will dismiss the message upon click.

BSTabs.js, PageState.js, Form.js: done.
Alert.js: first draw, layout not of alerts not proper yet.
Added jasmine tests.

PageState.js: allows to use window.history.state, which is dubbed `data`. PopState Handlers are now called with the PageState object as first and only argument, in order to allow access to `data`.
QfqPage.js: use data to store page title in page state. Constructor sets page state explicitly, if none exists so far by setting it to the active tab; this allows to navigate to the first state.

Gruntfile.js: concat and uglify for our javascript stuff.
Added support for storing state of Bootstrap pills.
Added jasmine tests.