Added base Web App functionalities and models. Minor fixes.

...ons/mimetypes/gnome-mime-application-x-font-linux-psf.png

...tic/icons/mimetypes/gnome-mime-application-x-font-pcf.png

...ns/mimetypes/gnome-mime-application-x-font-sunos-news.png

...tic/icons/mimetypes/gnome-mime-application-x-font-ttf.png

...tic/icons/mimetypes/gnome-mime-application-x-gnumeric.png

...imetypes/gnome-mime-application-x-gzip-compressed-tar.png

.../static/icons/mimetypes/gnome-mime-application-x-gzip.png

...icons/mimetypes/gnome-mime-application-x-gzpostscript.png

...p/static/icons/mimetypes/gnome-mime-application-x-jar.png

...icons/mimetypes/gnome-mime-application-x-killustrator.png

...c/icons/mimetypes/gnome-mime-application-x-kpresenter.png

...atic/icons/mimetypes/gnome-mime-application-x-kspread.png

...static/icons/mimetypes/gnome-mime-application-x-kword.png

...p/static/icons/mimetypes/gnome-mime-application-x-lha.png

...p/static/icons/mimetypes/gnome-mime-application-x-lhz.png

...imetypes/gnome-mime-application-x-lzma-compressed-tar.png

.../static/icons/mimetypes/gnome-mime-application-x-lzma.png

.../mimetypes/gnome-mime-application-x-ms-dos-executable.png

.../static/icons/mimetypes/gnome-mime-application-x-perl.png

...p/static/icons/mimetypes/gnome-mime-application-x-php.png