haproxy_ctld_daemon.rb: Fix backtrace option

The haproxy_ctld_daemon.rb script in the haproxy cartridge had a typo:
':backgrace' instead of ':backtrace'.

This typo appears to have been present since haproxy_ctld_daemon.rb was
introduced in commit ee8cebbe1adb351a3b80ca3fda4f047aee8fac1b.
process_templates need to be String literals
bin/* needs to be executable
Mention EOL chacacters
Mention chmod.
Add Windows-friendly instructions
Application's action hooks follow the same semantics as cartridge control scripts
A typo
Add sections for readability
Minor tweak in wording
make haproxy a sparse cart
Merge pull request #3125 from rajatchopra/ha

Merged by openshift-bot
Bug 983923 - Add "-h" as an argument to get help.
Bug 960355 - Fix file permissions.
Merge pull request #3127 from rmillner/misc_bugs

Merged by openshift-bot
<oo-stats> splitting into first admin library class
<admin-console> reuse admin stats library
Merge pull request #3128 from sosiouxme/admin-console-stats

Merged by openshift-bot
Added system architecture guide
Added equivalent Fedora commands when they are different than RHEL ones