* Fix "Install" menu item function

* Update some new translatable strings
* Update translations for new translatable strings

        * Make updating cancellable
        * Fix corrupting related row after updating error

    * Make uninstalling cancellable
    * Fix corrupting related row after uninstallation error

* Make installing cancellable
* Fix corrupting related row after installation error

* Update "Versioning" section
* Remove "Roadmap" section, there is no ROADMAP.md
* Fix English on "Licensing" section

Fix an error when uninstalling

* Update paths for setup.py
* Run updatepo.sh

0.1.0 is alpha version for Pardus Flatpak GUI. We will test this.

* Rewrite/refactor "Uninstall" menu item function

NOTE: This function wasn't tested yet. This commit is a backup commit.

* Rewrite/refactor "Update All" menu item function (1/X)

* Rewrite/refactor "Uninstall" menu item function

NOTE: There is a problem during refiltering after uninstalling when
      "Show Installed Apps" button is toggled.

* Re-implement installing from file with command-line argument

* Refactor flatpakguiapp.py

* Remove "Install From Entry" and "Install From File" menu item functions.
  They are useless when a search bar is available.

* Rename some UI objects
* Fix Turkish

* Rewrite "Install From Entry" menu item function

* Rewrite installwindow.py (3/3)

* Rewrite installwindow.py (2/X)

* Rewrite installwindow.py (1/X)
* Add a FIXME to mainwindow.py
* Fix (?) a warning when main window is closed