* Bug fixes in Save Modal
Issues solved:
- Save button doesn't pass in gotodash
- slice_name was passed in from store as original slice_name instead of
new one in 'saveas' action
- datasource_type wasn't passed in to defaultViz and defaultForm
function
* Change css filename to exploreV2
* Moved out utils
* Added filter in ControlPanelsContainer
* Move function for getting url params object to utils
* Fixed python test
* Move Filter to separate component
* Added specs and made changes based on comments
* Moved specs to right folder
* Added specs for SaveModal
* Move datasource_id and datasource_name to form_data
* Add comments
* Deleted redundant fetchDashboard
* Replcae has_key for python3
* More react and less jquery
* Added alert for save slice
* Small changes based on comments
* Use react bootstrap
