Fix evaluation of formatLoadMore
Bugfix - only selected options that are not disabled should be used when initializing the dropdown
Merge pull request #2129 from campbell/master

Bugfix - only selected options that are not disabled should be used when initializing a dropdown
Add `shouldFocusInput` option [Fix #1541]

This adds a `shouldFocusInput` option that determines whether or
not the focusser should be automatically focused.  By default, the
focusser will always be focused, unless `minimumResultsForSearch`
is less than zero.

`close` on single selects took an option `params` argument which
at one point was used to tell the focusser to not automatically
focus.  This was added at one point when tweaking the mask [1]
and later reverted to fix a bug that came as a result [2].  The
leftovers of this code has been removed in this commit.

[1]: https://github.com/ivaynberg/select2/commit/e162a4802cddfb95fdef8793fc83fc07897650ec
[2]: https://github.com/ivaynberg/select2/commit/9bc68f089e4d81e0dd0e8de943071ae36a3394cd
Update and improve Persian (fa) translations
Merge pull request #2146 from ebraminio/master

Update and improve Persian (fa) translations
Unit of measure px is redundant

Remove 'px' when property is set to 0.
Update select2.css
Merge pull request #2148 from djarnis73/patch-1

Update select2.css to prevent float & width style to leak in
Merge pull request #2147 from juanluisrp/patch-1

Unit of measure px is redundant
fix select2 csp errors / warnings
Merge pull request #2151 from dhardtke/csp_fixes

fix select2 csp errors / warnings
Fix a typo in the docs.
Unselected item is returned as options only if event isn't prevented
Removed unnecessary animation during unseint multiselect by close button
After prevented removing of item in multiselect, proper item is focused
Merge pull request #2125 from colemanw/evaluateFix

Fix evaluation of formatLoadMore
Provide context for evaluated functions
Merge pull request #2160 from s7anley/bugfix/2073-select2-removing

Multiselect items are not removed when event is prevented
Merge pull request #2140 from ivaynberg/issue_1541

Add `shouldFocusInput` option [Fix #1541]