Fix Makefile help message

Swap descriptions of "deploy" and "undeploy" targets.
Update README

Discards PHP configuration sections, adds Python configuration and requirements sections.
Disable unneeded update timers on mode switchers
Remove obsolete static HTML code
Cosmetics in index.html
Fix whitespace confusion in desktop's main.css
Fix whitespace confusion in render.js
Implement database backend

This patch inroduces the database interface script and a make target for setting
up the database.
Automatically create database if it is not present

When the page is first loaded, the database version is queried. If it returns
'None', the database is automatically initialized.
Fix whitespace issues in index.html
Add login view skeleton

This patch adds a rudimentary login view and corresponding style sheets.
Currently it is only displayed, if the login process was successful or not.
Further implementation (cookies etc.) must be added.
Merge branch 'master' into haggl/database

Conflicts:
	frontend/render.js
	index.html
Merge pull request #29 from cmplex/haggl/database

Database backend and rudimentary login view