Perform backup of /etc/rc.local prior installation
Add support for custom installation folder

Parameter rpicamdir in script RPi_Cam_Web_Interface_Installer.sh
Add href to open fullsize images on a new tab

Make possible to open the fullsize image on a new tab when clicking on
the preview itself.
Update official link with the new forum url format
Fix /etc/raspimjpeg to work with custom folder

Amend to commit 1882cd5 where I forgot to also fix /etc/raspimjpeg
accordingly.
Fix rc.local to work with custom folder
Better solution for custom folder installation
Fix the particular case in which rpicamdir=""

It avoids to add unwanted / in paths such as www//
Fix custom folder creation order at install time
Add support to specify install folder as $2
Restore the backed up /etc/rc.local upon uninstall
Fix wrong path removing usr/bin/raspimjpeg symlink
Changes to install script to allow nginx usage

Added options for "install_nginx" and "remove_nginx"
Added files copied by script changes

Ngnix 'virtual host' config file and php-apc config file.
Bugfix

Missed changing the gzip parameter.
Merge branch 'master' of github.com:S0PH0S/RPi_Cam_Web_Interface
Add support for nginx by S0PH0S
added raspimjpeg v4.2.1; lots of NULL initialization and NULL checks; start_all()/stop_all() create/cleanup the same stuff
Merge branch 'master' of https://github.com/silvanmelchior/RPi_Cam_Web_Interface
Move nginx support to its own branch: nginx
Fix typo in source path www/