Improve english strings (#608)
Improve english strings (#608)

* Change "phone" to "device"
* Remove redundant "setting" from settings menu strings
* Change error_invalid_url string
* Improve http error strings
* Change error 495 string
* Shorten error messages
* Add "server" where openhab is mentioned
* Dont mention client cert in handshake error
* Misc => Miscellaneous

Signed-off-by: mueller-ma <fac07b9175991ebb2e15926da5ff5c758acad074@users.noreply.github.com>

openhab/openhab.android