Merge pull request #35 from jahir/master

cookie expiration time einheitlich auf y2k38
Update htdocs/frontend/index.html
Make the frontend/index.html XHTML compliant
Merge pull request #36 from TkdAndi/patch-1

Typo fix and XHTML compliance for frontend's index.html
use yaxis 2 also for gas
Update htdocs/frontend/index.html

Added further iOS WebApp support -- will configure usefull viewport later. Install App Title depends on html Title (could be changed for mobile iOS page [c.f. by useragent switch in php] for a even more improved usability during wepapp-install)
Update htdocs/frontend/index.html

inserted javascript to change Title on iOS
Update htdocs/frontend/index.html

removed unused viewports
Update htdocs/frontend/index.html

first entry for android and ios, second one for android
Update htdocs/frontend/index.html

added comment
Merge pull request #37 from ctvoigt/master

-Icon precomposed: kein gloss effekt (Vergleich in [2]
-WebCapable: App verhält sich dann wie eine installierte App
-NavigationBar color [3]
-Titel auf iOS kürzer, damit beim klick auf "Add to HomeScreen" keine Einstellungen verändert werden müssen und der Titel für den HomeScreen nicht zu lang ist[5]


[2] https://www.dropbox.com/s/ik5kz44hamuvl93/icon.png
[3] https://www.dropbox.com/s/f55quhdv2nvxgje/browser_webcapable.png 
[4] https://www.dropbox.com/s/w9simnyjiyi3625/title.png 
[5] https://www.dropbox.com/s/w9simnyjiyi3625/title.png
added basic functionality for monitoring a corridor for values
Merge pull request #38 from jahir/master

Mal wieder ein paar fixes...