[EPIC] Additional arrow types

[AndreiMazol]

This epic is created to enhance the functionality that relates to Arrow Tool and have partially been implemented in scope of #520 .

SCOPE:

1. Need to decompose Reaction Arrow Tool button.
2. Need to implement additional arrow types.
3. Need to implement possibility to change arrow length and direction.

1. Decompose Reaction Arrow Tool button

Now:
Reaction Arrow Tool button is on the Taskbar on the left side. By clicking on the arrow on the corner of the button, list of tools expands - Reaction Arrow Tool, Reaction Arrow Equilibrium Tool, Plus, Reaction Auto-Mapping Tool, Reaction Mapping Tool, Reaction Unmapping tool.
To do:
Three separate buttons on the Taskbar: Arrow Open Angle Tool - by clicking on the corner the button, list of arrows expands, Plus, Reaction Mapping Tool - by clicking on the corner of the button, list of mapping tools expands.
Regardless browser's window's size, those three buttons should be presented on the Taskbar separately.
List of the arrows:

1. Arrow Open Angle Tool
2. Arrow Filled Triangle
3. Arrow Filled Bow Tool
4. Arrow Dashed Open Angle Tool
5. Failed Arrow Tool
6. Arrow Both Ends Filled Triangle Tool
7. Arrow Equilibrium Filled Triangle Tool
8. Arrow Equilibrium Filled Half Bow
9. Arrow Equilibrium Open Angle Tool
10. Arrow Unbalanced Equilibrium Filled Half Bow Tool
11. Arrow Unbalanced Equilibrium Open Half Angle Tool
12. Arrow Unbalanced Equilibrium Large Filled Half Bow Tool
13. Arrow Unbalanced Equilibrium Filled Half Triangle Tool

Arrow Open Angle Tool is a default arrow.

2. Implement additional arrow types
Now:
There is two types of arrows available - Reaction Arrow Tool, Reaction Arrow Equilibrium Tool.
To do:

• Change the name of available arrows:

1. 'Reaction Arrow Tool' to 'Arrow Open Angle Tool'
2. 'Reaction Arrow Equilibrium Tool' to 'Arrow Equilibrium Filled Half Bow'

• Add new ones:

(Icon's view and view on the canvas for example)

1. Arrow Filled Triangle
   
   

2. Arrow Filled Bow Tool
   
   

3. Arrow Dashed Open Angle Tool
   
   

4. Failed Arrow Tool
   
   

5. Arrow Both Ends Filled Triangle Tool
   
   

6. Arrow Equilibrium Filled Triangle Tool
   
   

7. Arrow Equilibrium Open Angle Tool
   
   

8. Arrow Unbalanced Equilibrium Filled Half Bow Tool
   
   

9. Arrow Unbalanced Equilibrium Open Half Angle Tool
   
   

10. Arrow Unbalanced Equilibrium Large Filled Half Bow Tool
    
    

11. Arrow Unbalanced Equilibrium Filled Half Triangle Tool
    
    

When user hover over the button in the Taskbar and in the expanded tools list, tooltips with the names of the tools appear.

3. Possibility to change arrow length and direction
When user clicks on the Arrow Tool and clicks on the canvas, arrow of the chosen type and default length appears.
When user clicks on the end of the arrow and drags it, arrow changes its length and direction.
When user use selection tool to select end of the arrow, selection works for the whole arrow (whole arrow is selected).

For the "ket" format save/load should work correctly (including arrow length, direction, coordinate and type)
If user selects another format to save the arrow, except Arrow Open Angle Tool, then the warning message "The ${Selected_format} does not support drawn elements: chosen arrow will be replaced with the reaction arrow" appears.