Remove bug with closing and hiding.

[gigafiga21]

Information:

Appears when closing/hiding first tab.

[gigafiga21]

Solution:

1. Tab wth no previous history is only first.
2. Find the next tab at DOM.
3. Open it.
4. Remove first tab.

[gigafiga21]

Bug:

Remove all mentions of tab from history after removing hidded tab.

[gigafiga21]

Unify openTab method, remove hideTab method as separate.

[gigafiga21]

Add an array of tabs order in the DOM.

[gigafiga21]

Remove stack.