Fixes

[JakovTomasic]

I implemented a few fixes and improvements. Each commit is a separate fix explained in the commit's message.

[JakovTomasic]

Please review the new changes, too.

I fixed that weird two nodes that were too close in fe8332f821a0b6d0f2bd97a78399308a83f7bec1.

[JakovTomasic]

How to recreate the bug:

• click to input start.
• enter "cantine". Do NOT click on the dropdown or anywhere else
• while the cantine dropdown is visible, click on the destination input
• enter p4. Do NOT click on the dropdown or anywhere else
• while the p4 dropdown is visible, click on the swap button

The cantine will erase and P4 will autofill, but will not swap.

The problem lies in the order of execution of multiple event listeners (automatic P4 input and swap).

There are also other possible bugs caused by this same error:

• click to input start.
• enter "cantine"
• click outside of input and dropdown, somewhere on the background
• click to input the destination
• enter p4. Do NOT click on the dropdown or anywhere else
• while the p4 dropdown is visible, click on the swap button
• click swap a few more times and both start and destination will be "cantine"

[Marko132001]

First case recreation:

• Write cantine in first input and select cantine from dropdown
• Write P4 in second input and select P4 from dropdown
• Click on switch button
• Result: nothing happens

Second case recreation:

• Write cantine in first input and select cantine from dropdown
• Write 1-104 in second input and select 1-104 from dropdown
• Click on switch button
• Result: cantine is in both inputs

I've also encountered cases when the switch works perfectly, but it's not consistent. One time it works, one time it doesn't and then sometimes it just doesn't work at all.