Remove ambiguous entries in Italian translation

The Italian translation is using "cancella" to translate various English terms like "cancel", "delete", "clear" o "un-something", this is confusing if some of these terms are used near each other (e.g. two buttons "cancel" and "delete").

See issue https://github.com/github/android/issues/498
Czech translation

added complete czech translation
Small fixes

Small fixes in the meaning of words "issues"...
Updating Korean translation
Add textIsSelectable to TextView
Add SelectableLinkMovementMethod

A custom LinkMovementMethod that will let any textview to have links along
with selectable contents at the same time.
As issue #625 confirms, sometimes user wants to copy/paste some text when viewing issues,
while keeping the links functional.
Improve the SwipeRefreshLayout and remove the old loading indicator
Fix duplicate issues when searching.

Don't search for open and closed as the legacy request doesn't work.
This is just a temporal solution, I've added a TODO to fix the request
ASAP.

Fixes #495
Don't accept 'orgs' as a valid user name
Fixed name property causing missing Translation
Update spanish translations
Remove all imports of 'com.github.mobile.R.*'

This keeps Android Studio and Lint happier.
Revert "Remove all imports of 'com.github.mobile.R.*'"
Added log out functionality.
Upgrade to Portuguese

Translation to Portuguese
Added translation to Polish :D
Revert "Add translation to Polish"
Revert "Upgrade to Portuguese"
Revert "Added log out functionality."
Revert "Revert 639 imports"