Time strings now converted correctly

- Removed all System.TimeSpan's
- Created a new Folder 'Utils'
- Created a new class 'TimeStringConverter' with two sub-classes
Earth-/KerbinTimeStringConverter

Fixes #192
Some small changes to the TimeStringconverter

- TimeStringConverter moved to SimpleTypes
- Utils folder removed
- KerbinDays are now 426 and not 365 and removed the const DaysPerYear
Draft
Documented & TrackingStation issue fixed
Update CHANGES.md
Merge pull request #206 from Peppie23/kerbin_time_timespan

Time strings now converted correctly
Fix for KSP 0.25 name change
Fix for #193 breaking settings file compatibility
Clarified how to build RemoteTech.

Requested by Durandal, first post of conversation at http://forum.kerbalspaceprogram.com/threads/83305?p=1460855#post1460855.
Merge pull request #210 from Starstrider42/0.25-fixes

Fix for KSP 0.25 name change
Merge pull request #209 from Starstrider42/master

Clarified how to build RemoteTech.
Merge pull request #208 from Starstrider42/easier-icons

High Priority: RT 1.5.0 compatibility fix
Merge pull request #207 from Peppie23/infinite_map_zoom

Fixed Infinite map zoom