Fix Save Search Button

1 Close the modal after clicking the save button and saved search

2 saved search needs to appear under saved searches dropdown menu, if not it needs to be clear to the user why it didn't happen

3 make sure it works across browsers even in IE

Fix MultiSelect Bug

MultiSelect re-init select2.js on 'onSelect' event and trigger errors.

Remove Saved Search

Ability to remove saved search

Fix Right Column

support to fix the right column of table and scroll others

Default Minimum Length

support config default minimum length of lazy select

Export Page Limits

Introduces optional Export Page Limits.

New lazy_select and lazy_multi_select inputs

Two new types of filters which lazily load a list of objects from an URL differing from the current select/multi_select which load the full list of objects.

No longer display NULL values

Updates filterbar to no longer display null values.

1.7.11

Fixes a bug that breaks quick filters if a quick filter block label is
provided.

1.7.10

Adds button and block labels.