Rename project in many places; Replace Most Project Logos; Refactor About Tenacity... Dialog (#276)

Add `locale/en.po` file.
Add English to `locale/LINGUAS` list.
Partially duplicate `msgid`s to `msgstr`s in English locale enable eventual key `msgid` changes
Replace former project name with Tenacity in English locale.
Replace former project website with Tenacity compatible usages in English locale.
Modify `AboutDialog.h` by renaming variables.
Modify `AboutDialog.cpp` by replacing usage of pre-fork name in Strings.
Modify AddBuildInfoRow methods to be static in About dialog.
Make License text const in About dialog.
Make pre-fork credits different in About dialog.
Begin adding Tenacity specific credits
Macros starting with `__` are reserved, so I removed the `__` on the About Dialog guard macro.
Remove `AboutDialog::` from usage of `Role` in `AboutDialog.h`
Refactor overly long generator method into separate methods in `AboutDialog.(h|cpp)`
Begin adding Tenacity developer information
Cleanup layout of `AboutDialog.h` and `AboutDialog.cpp`
Add `safedelete` macro to compliment odd `safenew` macro
Add `enum` to `ShuttleGui.cpp` to make it more clear what `Prop` method is doing.
Remove a ton of pointless and/or redunant `#ifdef` usage
Remove pointless singleton in AboutDialog
Make AboutDialog modal on MacOS
Fix reference type use of `auto` in `AudacityApp` b/c it makes unintentional copy.
Update XPM and PNG images using Tenacity assets
Update ICO images using Tenacity assets.
Fix Windows resource script that improperly used `winuser.h` import.
Add `*.aps` to gitignore to prevent IDE RC pre-load file from being committed.
Add default values for pre-processor constants in `tenacity.rc`.
Make changes needed for `Tenacity.exe` binary
Add 8x8 PNG to Windows ICO files
Replace project name in various CMake and CPack file.
Replace project name in various directory structures.
Replace project name in various OS-specific build files.
Replace project name in various documentation files.
Update the PO and POT files using the script.
Fix places where a `.desktop` file was used on Linux.
Replace title of project windows.
Make splash screen click through to `tenacityaudio.org`.
Remove ® from `AboutDialog.cpp`
Modify copyright message in `AboutDialog.cpp`

Signed-off-by: Emily Mabrey <emilymabrey93@gmail.com>

cmake-proxies/cmake-modules/Package.cmake

@@ -1,8 +1,8 @@
 set(CPACK_PACKAGE_VERSION_MAJOR "${AUDACITY_VERSION}") # X
 set(CPACK_PACKAGE_VERSION_MINOR "${AUDACITY_RELEASE}") # Y
 set(CPACK_PACKAGE_VERSION_PATCH "${AUDACITY_REVISION}") # Z
-set(CPACK_PACKAGE_VENDOR "Audacity")
-set(CPACK_PACKAGE_HOMEPAGE_URL "https://audacityteam.org")
+set(CPACK_PACKAGE_VENDOR "Tenacity")
+set(CPACK_PACKAGE_HOMEPAGE_URL "https://tenacityaudio.org")
 
 # X.Y.Z-alpha-20210615
 set(CPACK_PACKAGE_VERSION "${AUDACITY_VERSION}.${AUDACITY_RELEASE}.${AUDACITY_REVISION}${AUDACITY_SUFFIX}")
@@ -25,8 +25,8 @@ elseif(CMAKE_SYSTEM_NAME MATCHES "Linux")
 endif()
 
 # audacity-linux-X.Y.Z-alpha-20210615
-set(CPACK_PACKAGE_FILE_NAME "audacity-${os}-${CPACK_PACKAGE_VERSION}")
-set(zsync_name "audacity-${os}-*") # '*' is wildcard (here it means any version)
+set(CPACK_PACKAGE_FILE_NAME "tenacity-${os}-${CPACK_PACKAGE_VERSION}")
+set(zsync_name "tenacity-${os}-*") # '*' is wildcard (here it means any version)
 
 if(DEFINED AUDACITY_ARCH_LABEL)
    # audacity-linux-X.Y.Z-alpha-20210615-x86_64
@@ -44,7 +44,7 @@ if(CMAKE_SYSTEM_NAME MATCHES "Linux")
    set(CPACK_EXTERNAL_PACKAGE_SCRIPT "${PROJECT_SOURCE_DIR}/linux/package_appimage.cmake")
    if(AUDACITY_BUILD_LEVEL EQUAL 2)
       # Enable updates. See https://github.com/AppImage/AppImageSpec/blob/master/draft.md#update-information
-      set(CPACK_AUDACITY_APPIMAGE_UPDATE_INFO "gh-releases-zsync|audacity|audacity|latest|${zsync_name}.AppImage.zsync")
+      set(CPACK_AUDACITY_APPIMAGE_UPDATE_INFO "gh-releases-zsync|tenacityteam|tenacity|latest|${zsync_name}.AppImage.zsync")
    endif()
 elseif( CMAKE_SYSTEM_NAME STREQUAL "Darwin" )
    set( CPACK_GENERATOR DragNDrop )