fixed java 7 incompatibility
Javadoc partly corrected for UTF-8
added used libraries to index
.gitignore
Javadoc updated and converted to UTF-8 (second part)
Javadoc completely converted to UTF-8
removed some old and unnessessary experimental classes
Merge branch 'master' into dropboxAPI

Conflicts:
	WetteranalyseWindows/.gitignore
	WetteranalyseWindows/src/de/miktec/wetteranalyse/win/gui/ActionCommands.java
	WetteranalyseWindows/src/de/miktec/wetteranalyse/win/gui/SettingsDialog.java
	WetteranalyseWindows/src/de/miktec/wetteranalyse/win/util/DayValues.java