epedev-207

allow same resource to be added in llb exploration page
remove epe_llb_node_update function -- doesn't work as expected
add epe_llb_node_presave -- only execute if llb and has ID, so we know
this is an update and execute our custom query
uncheck any checkbox after resource browser modal has been dismissed
epedev-203, epedev-340

change file and thumbnail form field from type file to type
managed_file, this allow drupal to clean up temporary/orphan file
change how javascript setting is attached to the form with after_build
function, this prevent losing setting variable if there is a form error
(but only for the 1st time)
adjust javascript to show thumbnail field if there is a form error but
user already attach a non image resource file to the form
epedev-226, epedev-301

minor code clean up
add pagination to individual resource type tab (create new filter
directive for pagination, add new filter to repeat loop)
add target to individual resource link for preview
epedev-226

minor code change: page size change to 10 item per page
epedev-203

fix video upload bug after change resource edit form's file field type
from file to managed_file
Updated EV Tool Instance Edit Template
Removed secondary loading of controls.
Added the isEdit property to the tool load event
Updated EduVis.js 
Removed older unused modules and functions.
Modified tool control loading functionality
Merge branch 'master' of https://github.com/ooiepe/epe_ev
Merge branch 'master' of https://github.com/ooiepe/epe_dbfiles
Merge branch 'master' of https://github.com/ooiepe/epe_dbresource_browser
Merge branch 'master' of https://github.com/ooiepe/epe_llb