Adde remove rename for install folder

remove_install_folder
remove_install_folder
About InstallerChecker

Added if if clause.
Added Global Block

for "XOOPS_CENTERBLOCK_GLOBAL",25
and xoops_cgblocks as Center Global Blocks
Added Global for header strings

Added Global for header strings
Admin panel change

Select drop down and select multi to radio button and checkbox.
Add Bootstrap theme and Global navigation block