Totally rewritten script

Added description.
Code parts are foldable.
New features, new hotkeys.
Removed icon (waste of script's size).
The script looks pretty stable.

The script requires:
1. special hardware:
  a. advanced mouse (with extra buttons)
  b. advanced keyboard (with extra buttons too)
2. some .ahk knowledge, since the script needs to be tuned a bit to suit the user most:
  a. adjust hotkeys (don't forget to ctrl+f for "a_thishotkey" to define hotkey-dependent blocks of code) for max comfortability.
  b. set valid paths to the utils to execute.