Spanish translation and fix English

edited : values/strings.xml
-'version_abandoned' : Replaced "You're" with "Your"
-'settings_wifi_only_title' : Replaced "wifi" with "Wi-Fi"
-'settings_wifi_only_summary_on' : Replaced "wifi" with "Wi-Fi"
-'settings_check_for_tst_builds_summary_on' : Replaced "Updater'll" with
"Updater will" to clarify to people that English isn't the first
language.
-Replaced all ".." with standard Ellipsis representation "..."

added : values-es
Spanish values folder
added : values-es/strings.xml
Spanish translation file v1.