Tidied up Installation

Removed unused functions, old code from abandoned "delete install
folder" attempt, and changed the launch links from admin_index.php to
index.php, which will result in the welcome message being displayed when
first starting Hotaru.
settings for default theme - span width of left column
smartcache for theme settings
quick spin up of pluginmanagememt page with tabs
session_start removed

revert yesterdys addition
cookie for domain fix
show message in default theme
Merge pull request #35 from nickramsay/install-tidy

Tidied up Installation
version updated
Update README.md
update forgot password link
move plugin management search to tab
update readme files
Merge pull request #1 from HotaruCMS/master

Update from Hotaru master