OMB - Major Refactor (#39)

* OMB - Major Refactor

- Aliases and completions now works like plugins (need to enabled in .bashrc)
- Removed the compatible check in spectrum.sh, OMB now works with Bash v3.x like the old days.
- Removed core plugin, added those bash functions into base.sh and load during startup.
- Updated OSH template for new installations
- Added history config and few other stuff from #17

@TODO: Added a shell script to update old version of .bashrc to new one.

* Fixed ShellCheck issues

* Fixed ShellCheck issues

lib/utils.sh

@@ -119,7 +119,7 @@ e_underline() { printf "${underline}${bold}%s${reset}\n" "$@"
 }
 e_bold() { printf "${bold}%s${reset}\n" "$@"
 }
-e_note() { printf "${underline}${bold}${blue}Note:${reset}  ${blue}%s${reset}\n" "$@"
+e_note() { printf "${underline}${bold}${blue}Note:${reset}  ${yellow}%s${reset}\n" "$@"
 }
 
 #
@@ -134,9 +134,9 @@ e_note() { printf "${underline}${bold}${blue}Note:${reset}  ${blue}%s${reset}\n"
 # fi
 #
 seek_confirmation() {
-  printf "\n${bold}%s${reset}" "$@"
+  printf "\\n${bold}%s${reset}" "$@"
   read -p " (y/n) " -n 1
-  printf "\n"
+  printf "\\n"
 }
 
 # Test whether the result of an 'ask' is a confirmation