Issue #350 fix: Change sidebar icon on toggle & load

[lakhanmandloi]

Pull Request for Issue #350 .

Summary of Changes

Icon should change on menu toggle link click.

Before fix open

After fix open

Before fix close

After fix close

Testing Instructions

1. Log in to Admin area
2. Click on Toggle Menu Link, icon should change after click.
3. Refresh page and check the menu toggle status should not change and icon should be appropriate.

Expected result

For Open menu, icon should be -

For Close Menu, icon should be -

Actual result

For Open menu, icon is -

For Close Menu, icon is -

Documentation Changes Required - No

[ciar4n]

Thank you @lakhanmandloi Good job!

[lakhanmandloi]

Thank you @ciar4n :)