The display code must be splitted

[illwieckz]

Currently, XML, raw and standard display code are contained in the too-long qstat.c file.
The upcoming JSON code will extend again things too long qstat.c file.

So, after the JSON merge, the display code must be splited-out with a coherent way, it's also time to fix some issues in the template display code because the way it copy past definitions from existing h-file is not good, it's time to adapt it to have a generic way to include splitted display code.

This split must be done after the JSON merge for coherence. See #13 and #23.

[illwieckz]

Oops, I already did one, see #18, the #28 is the good one.