Added dummy parts to make tech upgrades visible

Dummy parts will help users see where fairing upgrades appear in tech tree. Invalid values of `category` ensures that these parts will appear only in the tech tree, not in the VAB.
Safeguard to avoid removing any colliders not belonging to the side fairing. It looks unnecessary though.
Merge pull request #2 from Starstrider42/master

Visible upgrades in tech tree
Restored TechRequired for old parts to avoid issues with loading old designs in career mode.
Merge branch 'master' of https://github.com/e-dog/ProceduralFairings
Reworked fake parts (descriptions, models, no need for Module Manager).
Fixed bug that allowed to cheat tech limits in career mode.
Reduced default ejection torque.
3.04 release notes
Fixed collider bug introduced in 3.04.
Updated for KSP 0.24.
Procedural cost for side fairings.
Procedural costs for bases etc.
Hiding extra node balls in the editor.
Decoupler workaround.
Updated KAE DLL for KSP 0.24.2.
Updated KAE DLL.