Fix #40 - added possibility to login with GET request
For #40 - preserve locale parameter during redirect, print 'Authentication failed' instead of stack trace
Fix #38 - possibility to change user's password
For #40 - redirect in any case, even if already logged in
Merge branch 'dev' into gpx_import

Conflicts:
	README.md
	src/main/java/org/traccar/web/client/i18n/Messages.java
	src/main/java/org/traccar/web/server/model/GuiceServletConfig.java
	src/main/resources/org/traccar/web/client/i18n/Messages.properties
	src/main/resources/org/traccar/web/client/i18n/Messages_ru.properties