webif: Create webif directory with all the templates.

This commit prepares OSCam for automatic generation of module-webif-pages.c

All templates are extracted in webif/ directory, which holds pages_index.txt
and pages_gen.c which are used to generate module-webif-pages.c equivallent
from the extracted files.

The resulting webif/pages.c file when build results in exactly the same
object file as module-webif-pages.c, cleanups and extras would be added later.

Automatic building is not yet wired to OSCam build system, this would happen
in the next commit.

git-svn-id: http://streamboard.de.vu/svn/oscam/trunk@8418 4b0bc96b-bc66-0410-9d44-ebda105a78c1
webif: Delete module-webif-pages.c and use generated webif/pages.c

git-svn-id: http://streamboard.de.vu/svn/oscam/trunk@8419 4b0bc96b-bc66-0410-9d44-ebda105a78c1