CMS-3398 Image picker - Enable de-select by clicking on image

Added support for the image deselecting on click.
CMS-3391 Image Picker - Add square boxes around images

* Added box with 1px light-grey border and white bg around images
* dropped the grey border, when zooming image
* added the standard "glow" to the image, when image is zoomed
* dropped image name on mouse over when image is zoomed
CMS-3333 Thumbnail displaying

Updated ContentImageResource class. Added `crop` query parameter to
`getContentImage()`.
Added `crop=false` to persisted icon url for the FormIcon of WizardPanel
s.
CMS-3397 Image comonent - Image uploading fails
CMS-3410 Responsive Admin - Remaining items in toolbar
Merge pull request #720 from enonic/CMS-3397

CMS-3397 Image comonent - Image uploading fails
CMS-3394 Image Picker - Fix path and buttons

* Fixed pathes for embedded images
* Dropped buttons in selector dialog
Simplified module metadata. Removed unused (and soon to be refactored) fields.
Merge pull request #721 from enonic/CMS-3394

CMS-3394 Image Picker - Fix path and buttons
CMS-3394 Image Picker - Fix path and buttons

- fixed failing tests
CMS-3421 Implement module xsd/jaxb classes.
CMS-3397 Image comonent - Image uploading fails
CMS-3397 Image comonent - Image uploading fails
Merge branch 'master' of github.com:enonic/wem-ce into CMS-3391

Conflicts:
	modules/wem-webapp/src/main/webapp/admin/common/styles/api/form/inputtype/image-selector.less
Merge pull request #717 from enonic/CMS-3391

CMS-3391 Image Picker - Add square boxes around images
Merge pull request #722 from enonic/CMS-3397

CMS-3397 Image comonent - Image uploading fails
Merge pull request #715 from enonic/CMS-3398

CMS-3398 Image picker - Enable de-select by clicking on image
 CMS-3409 Simplify serverside javascript implementation.
Removed dupliate method in module implementation.
CMS-3421 Implement module xsd/jaxb classes.