Fixed critical Browser bugs for Internet Explorer

* Updated Angular.js to 1.2.4
* Updated Codemirror
* Fixed overflow bugs on SVG canvas
* Added upgrade splash for IE < 9

fix(browser): overflow hidden on svg elements make IE10 display visualisations better

chore(browser): update to Angular 1.2.3. Animations are still broken

fix(browser): use correct styling directive for legend. Fixes problem in IE10 where they didn't show

Fixes IE not expanding rendered frames to full height

Fix animating frame on enter

Fix for nested .animate() not being triggered

Fixes positioning of frame actions

Added upgrade splash for internet explorer < 9

Fixed drag n' drop for Angular 1.2

Remove console.log in FileUpload directive

Fix editor in IE by upgrading Codemirror

Fix multi-line mode

Focus editor the right way when clicking editor area

Fixed tooltip visibility

Put max height on label color legend

Fix animations

Fcous editor on load

Initialize cursor properly in IE

Fixed drawer animations

Fixed error bar animation

Fix problem when inspector content didn't load + update Angular to 1.2.4
Update angular reference.
Merge pull request #1733 from apcj/browser-ie-compat

Browser: Internet Explorer compatibility