Changed i[:] to i in redeclare.

This closes #282.
The warning occurred in Dymola 2015 FD01 beta2
Moved computation of errors

This change was done to avoid mixing graphical and textual modeling
within the equation section.
Added comment
Revised documentation.
Revised documentation.
Moved icon.

This aligns the input port in the iconic and the schematic editor view.
Reformated code.
Revised info section.
Removed link as the base class does not contain more info
Fixed doc and unit.
Fixed documentation and displayUnit

The displayUnit has been move to the base class.
Revised formatting.
Added defaultComponentName, revised documentation.
Corrected typo.
Revised formatting and corrected info section.
Corrected typo.
Corrected typo.
Revised formatting.
Added angle to the outputs.
Added comment.