luci-base: prevent CBI map save on invalid values (#618)
luci-base: prevent CBI map save on invalid values (#618)

Signed-off-by: Jo-Philipp Wich <a9275913d515487ffaed469337a530ed202da558@openwrt.org>

artynet/luci,wongsyrone/luci-1,hnyman/luci,tobiaswaldvogel/luci,tobiaswaldvogel/luci,Noltari/luci,jlopenwrtluci/luci,artynet/luci,chris5560/openwrt-luci,rogerpueyo/luci,openwrt/luci,LuttyYang/luci,teslamint/luci,Wedmer/luci,Noltari/luci,cshore/luci,openwrt/luci,openwrt-es/openwrt-luci,nmav/luci,daofeng2015/luci,teslamint/luci,rogerpueyo/luci,lbthomsen/openwrt-luci,artynet/luci,daofeng2015/luci,981213/luci-1,hnyman/luci,openwrt/luci,LuttyYang/luci,aa65535/luci,wongsyrone/luci-1,ollie27/openwrt_luci,oneru/luci,nmav/luci,bright-things/ionic-luci,cshore-firmware/openwrt-luci,kuoruan/luci,chris5560/openwrt-luci,LuttyYang/luci,hnyman/luci,openwrt-es/openwrt-luci,tobiaswaldvogel/luci,taiha/luci,nmav/luci,kuoruan/luci,NeoRaider/luci,NeoRaider/luci,oneru/luci,taiha/luci,Noltari/luci,cshore-firmware/openwrt-luci,daofeng2015/luci,hnyman/luci,cappiewu/luci,remakeelectric/luci,bright-things/ionic-luci,ollie27/openwrt_luci,lbthomsen/openwrt-luci,mumuqz/luci,artynet/luci,jlopenwrtluci/luci,Wedmer/luci,jlopenwrtluci/luci,aa65535/luci,bittorf/luci,cappiewu/luci,LuttyYang/luci,shangjiyu/luci-with-extra,oneru/luci,981213/luci-1,artynet/luci,NeoRaider/luci,bright-things/ionic-luci,cappiewu/luci,mumuqz/luci,rogerpueyo/luci,remakeelectric/luci,kuoruan/luci,cshore/luci,mumuqz/luci,teslamint/luci,oneru/luci,kuoruan/lede-luci,cappiewu/luci,bright-things/ionic-luci,bright-things/ionic-luci,cshore/luci,shangjiyu/luci-with-extra,cshore-firmware/openwrt-luci,bittorf/luci,Wedmer/luci,hnyman/luci,chris5560/openwrt-luci,bittorf/luci,jlopenwrtluci/luci,teslamint/luci,aa65535/luci,kuoruan/luci,cshore/luci,Noltari/luci,bittorf/luci,taiha/luci,rogerpueyo/luci,shangjiyu/luci-with-extra,cappiewu/luci,lbthomsen/openwrt-luci,Wedmer/luci,cshore/luci,tobiaswaldvogel/luci,rogerpueyo/luci,cshore/luci,LuttyYang/luci,openwrt-es/openwrt-luci,hnyman/luci,cappiewu/luci,oneru/luci,teslamint/luci,nmav/luci,openwrt/luci,mumuqz/luci,nmav/luci,NeoRaider/luci,mumuqz/luci,rogerpueyo/luci,remakeelectric/luci,cappiewu/luci,981213/luci-1,981213/luci-1,lbthomsen/openwrt-luci,ollie27/openwrt_luci,981213/luci-1,chris5560/openwrt-luci,openwrt/luci,openwrt-es/openwrt-luci,ollie27/openwrt_luci,bittorf/luci,chris5560/openwrt-luci,openwrt/luci,daofeng2015/luci,daofeng2015/luci,aa65535/luci,chris5560/openwrt-luci,Noltari/luci,openwrt-es/openwrt-luci,artynet/luci,nmav/luci,remakeelectric/luci,kuoruan/lede-luci,kuoruan/luci,NeoRaider/luci,taiha/luci,bright-things/ionic-luci,wongsyrone/luci-1,tobiaswaldvogel/luci,kuoruan/luci,shangjiyu/luci-with-extra,LuttyYang/luci,oneru/luci,kuoruan/lede-luci,oneru/luci,bittorf/luci,cshore-firmware/openwrt-luci,openwrt-es/openwrt-luci,shangjiyu/luci-with-extra,lbthomsen/openwrt-luci,openwrt/luci,NeoRaider/luci,Noltari/luci,mumuqz/luci,tobiaswaldvogel/luci,mumuqz/luci,lbthomsen/openwrt-luci,openwrt-es/openwrt-luci,cshore/luci,LuttyYang/luci,bright-things/ionic-luci,Noltari/luci,hnyman/luci,Noltari/luci,teslamint/luci,openwrt/luci,shangjiyu/luci-with-extra,teslamint/luci,Noltari/luci,wongsyrone/luci-1,kuoruan/lede-luci,daofeng2015/luci,lbthomsen/openwrt-luci,bittorf/luci,hnyman/luci,Wedmer/luci,chris5560/openwrt-luci,rogerpueyo/luci,taiha/luci,remakeelectric/luci,kuoruan/luci,nmav/luci,remakeelectric/luci,wongsyrone/luci-1,artynet/luci,aa65535/luci,tobiaswaldvogel/luci,981213/luci-1,cshore-firmware/openwrt-luci,Wedmer/luci,NeoRaider/luci,shangjiyu/luci-with-extra,artynet/luci,cappiewu/luci,shangjiyu/luci-with-extra,jlopenwrtluci/luci,mumuqz/luci,lbthomsen/openwrt-luci,kuoruan/lede-luci,bright-things/ionic-luci,jlopenwrtluci/luci,artynet/luci,kuoruan/luci,nmav/luci,oneru/luci,aa65535/luci,wongsyrone/luci-1,daofeng2015/luci,981213/luci-1,wongsyrone/luci-1,taiha/luci,bittorf/luci,NeoRaider/luci,Wedmer/luci,remakeelectric/luci,kuoruan/lede-luci,teslamint/luci,ollie27/openwrt_luci,tobiaswaldvogel/luci,taiha/luci,kuoruan/lede-luci,ollie27/openwrt_luci,cshore-firmware/openwrt-luci,ollie27/openwrt_luci,jlopenwrtluci/luci,openwrt-es/openwrt-luci,taiha/luci,remakeelectric/luci,chris5560/openwrt-luci,ollie27/openwrt_luci,cshore-firmware/openwrt-luci,daofeng2015/luci,aa65535/luci,rogerpueyo/luci,aa65535/luci,jlopenwrtluci/luci,kuoruan/lede-luci,cshore/luci,LuttyYang/luci,cshore-firmware/openwrt-luci,Wedmer/luci,wongsyrone/luci-1,nmav/luci