Add/adapt/expand basic subroutine structures for renewable energy systems control in electric net. Based on "RE H2" control. Overwrites previous Res_elec_Ctl.F, which didn't do anything, anyway. No real functionality added as of yet. To follow shortly.
- addition / major edit of textual information blocks and comments
- new function bodies for RES_elec_ctl_read  and RES_elec_ctl_PostProcess added

Tester model "Lion Battery" will not work with the changes beginning here. However, the "tester" value of the existing model is very limited.

Work in progress.

Compile on OS X O.K.