Main: Updated way DB names are generated

Switch from geting folder count in /var/www
to using SiteCount variable stored in /etc/ICTM/sites.count,
installer.sh has static 1, AppendCMS gets the file an increments it by one.
Fallback is build in for systems without sites.count

installer.sh

@@ -37,6 +37,7 @@ CompatVer=2
 phpver=7.4
 PHPMyadmin=1 #Overwriten by cms's without php
 sqlver=8.0
+SiteCount=1
 TestMode=0
 #PackageManager-config
 
@@ -386,8 +387,8 @@ for storeme in PKGM PKGI PKGUC PKGUP PKGLIST OUTPUT IMODE shortdist repo branch
     declare -p $storeme | cut -d ' ' -f 3- >> /etc/ICTM/mainvar.list
 done
 
-
 touch /etc/ICTM/sites/"$sitename"
+echo "SiteCount=$SiteCount" > /etc/ICTM/sites.count
 
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