Add image for ST_Azimuth
Add description for ST_GeometryTypeCode
Add description for ST_IsValidDetail
Update description and add images for ST_IsValidDetail
Add description and images for ST_IsValidReason
Add description for ST_Force2D
Add description for ST_OrderingEquals
Add link for ST_IsValidDetail an ST_IsValidReason
Add description and image for ST_MakeGrid
Add description and image for ST_MakeGridPoints
Add description and image for ST_MakePolygon
Add description and images for ST_MinimumDiameter
Update description and images for ST_MinimumDiameter
Add description for ST_RingBuffer and update several description
Update description and add images for ST_RingBuffer
Update images for ST_RingBuffer
Correct little mistakes
Improve image and correct description for ST_Azimuth
Improve ST_IsValidDetail
Add image for ST_MakeGrid