improve installation script concerning translation

--adjusting the installation script to use the kde
translations and at the same time dont download them
when the user doesnt want to install them

install.sh

@@ -13,26 +13,21 @@ fi
 
 cd build
 
+if [ -a po ] ; then
+    sudo rm -fr po
+fi
+if [ -a locale ] ; then
+    sudo rm -fr locale
+fi
+
 if [ "$1" == "--translations" ] ; then
-    if [ -a po ] ; then
-        sudo rm -fr po
-    fi
-    if [ -a locale ] ; then
-        sudo rm -fr locale
-    fi
     cmake -DCMAKE_INSTALL_PREFIX=/usr -DKDE_L10N_BRANCH=trunk -DKDE_L10N_AUTO_TRANSLATIONS=ON -DCMAKE_BUILD_TYPE=$build_type ..
     make fetch-translations
 elif [ "$1" == "--translations-stable" ] ; then
-    if [ -a po ] ; then
-        sudo rm -fr po
-    fi
-    if [ -a locale ] ; then
-        sudo rm -fr locale
-    fi
     cmake -DCMAKE_INSTALL_PREFIX=/usr -DKDE_L10N_BRANCH=stable -DKDE_L10N_AUTO_TRANSLATIONS=ON -DCMAKE_BUILD_TYPE=$build_type ..
     make fetch-translations    
 else
-    cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=$build_type ..
+    cmake -DCMAKE_INSTALL_PREFIX=/usr -DKDE_L10N_AUTO_TRANSLATIONS=OFF -DCMAKE_BUILD_TYPE=$build_type ..
     make
 fi