Fully reworked version.
A damage of the automatic weapons increasing more at upgrade than other weapons.

Improved upgrading algorithm, many bugs fixed, removed reloading speed upgrading

Fixed a problem when required component count for upgrading always been 75. Now it depends on weapon quality.
Now the damage of automatic weapons will increase rapidly only up to certain values(depends on weapon type).

- Reworked a code of weapon upgrade. Fixed a problem when damage of some weapons was not upgradable;
- Decreased a damage upgrade for automatic weapon if it already have a large damage;
- Amount of ingredients for upgrading was rebalanced.

- A limit on upgrades has been introduced. The limit depends on weapon damage and ammo type;
- Now increasing the shooting range at upgrade depends on the damage increasing;
- Minor fixes.

- Now you can upgrade the weapon regardless of its damage if the weapon has not reached the maximum tier (tier 5++);
- Added an ability to unequip the mods from any weapon, so you can freely install and uninstall the mods.

Now if upgradable weapon have any attachments or mods, the upgrade will be blocked and a corresponding message will be shown. To unlock the upgrade you must remove all attachments and mods from the weapon, after upgrade you can attach all this back.