Added configuration script

+ The configuration script (./config.sh) is used to set the root
    of the website.
* Renamed app/index.html to app/raw-index.html and replaced the base
    value with $ROOT (which gets replaced by the config value).
* Renamed app/build/app.build.js to app/build/raw-app.build.js and
    replaced the output value with $DEST. (replaced by another config
    value)
* Configuration settings are saved to ./.config.  For info on what each
    line represents, refer to the config.sh file which writes them
    in that order.
* Changed the build script (./build.sh) to use the config settings and
    build the scss files.
Fixed wording on configuration file

Relative paths will not work as they need to be relevant to the project
    root as well as ./app/build.
Further reduces size of site, fixes missing image.

* Fixes the file pokeball.png being unable to be loaded when the site
    is not located at root.
* Modifies build.sh to remove ./js/templates and bower.json from the
    built site so as to reduce filesize.
Changed the branding of the site.

* The site is now named Porysearch.
* The repo link on the front page now links to
    https://www.github.com/StAlRuth/porysearch.
* The style has been updated to include some blues so as to differentiate the
    site from its predecessor.
Merges branches `rebranding' and `build-scripts'.