First implementation of 2D Cartesian space.

Files and types with 'Cyl' have been changed to '2DCyl' to better
differentiate between the two types of 2D geometry.

Solvers for charged and neutral particles in 2D Cartesian space.

Added solveds for 1D neutral particles (this branch is not the place to
    do it, but it was a minor change).

User Manual updated with the new accepted options.

src/modules/moduleInput.f90

@@ -365,7 +365,6 @@ MODULE moduleInput
 
       !Gets the basename of the folder
       CALL config%get(object // '.folder', baseName, found)
-      PRINT *, baseName
       IF (found) THEN
         folder = baseName
 
@@ -654,7 +653,8 @@ MODULE moduleInput
     !Read the geometry (mesh) for the case
     SUBROUTINE readGeometry(config)
       USE moduleMesh
-      USE moduleMeshCylRead,    ONLY: meshCylGeneric
+      USE moduleMesh2DCylRead,  ONLY: mesh2DCylGeneric
+      USE moduleMesh2DCartRead, ONLY: mesh2DCartGeneric
       USE moduleMesh1DCartRead, ONLY: mesh1DCartGeneric
       USE moduleMesh1DRadRead,  ONLY: mesh1DRadGeneric
       USE moduleErrors
@@ -672,7 +672,11 @@ MODULE moduleInput
       SELECT CASE(geometryType)
       CASE ("2DCyl")
         !Creates a 2D cylindrical mesh
-        ALLOCATE(meshCylGeneric:: mesh)
+        ALLOCATE(mesh2DCylGeneric:: mesh)
+
+      CASE ("2DCart")
+        !Creates a 2D cylindrical mesh
+        ALLOCATE(mesh2DCartGeneric:: mesh)
 
       CASE ("1DCart")
         !Creates a 1D cartesian mesh