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/AudacityFunctions.cmake

@@ -263,7 +263,7 @@ function( audacity_append_common_compiler_options var use_pch )
          # Define/undefine _DEBUG
 	 # Yes, -U to /U too as needed for Windows:
 	 $<IF:$<CONFIG:Debug>,-D_DEBUG=1,-U_DEBUG>
-   )   
+   )
    # Definitions controlled by the AUDACITY_BUILD_LEVEL switch
    if( AUDACITY_BUILD_LEVEL EQUAL 0 )
       list( APPEND ${var} -DIS_ALPHA -DUSE_ALPHA_MANUAL )
@@ -408,7 +408,7 @@ function( audacity_module_fn NAME SOURCES IMPORT_TARGETS
 
    # compute LIBRARIES
    set( LIBRARIES )
-   
+
    foreach( IMPORT ${IMPORT_TARGETS} )
       list( APPEND LIBRARIES "${IMPORT}" )
    endforeach()
@@ -449,8 +449,8 @@ function( audacity_module_fn NAME SOURCES IMPORT_TARGETS
       endif()
 
       add_custom_command(TARGET ${TARGET} POST_BUILD
-         COMMAND ${CMAKE_COMMAND} -E copy 
-            "$<TARGET_FILE:${TARGET}>" 
+         COMMAND ${CMAKE_COMMAND} -E copy
+            "$<TARGET_FILE:${TARGET}>"
             "${REQUIRED_LOCATION}/$<TARGET_FILE_NAME:${TARGET}>"
       )
    endif()
@@ -478,7 +478,7 @@ function( audacity_module_fn NAME SOURCES IMPORT_TARGETS
    # collect dependency information
    list( APPEND GRAPH_EDGES "\"${TARGET}\" [${ATTRIBUTES}]" )
    if (NOT LIBTYPE STREQUAL "MODULE")
-      list( APPEND GRAPH_EDGES "\"Audacity\" -> \"${TARGET}\"" )
+      list( APPEND GRAPH_EDGES "\"Tenacity\" -> \"${TARGET}\"" )
    endif ()
    set(ACCESS PUBLIC PRIVATE INTERFACE)
    foreach( IMPORT ${IMPORT_TARGETS} )
@@ -589,7 +589,7 @@ function( addlib dir name symbol required check )
    set( TARGET_ROOT ${libsrc}/${dir} )
 
    # Define the option name
-   set( use ${_OPT}use_${name} ) 
+   set( use ${_OPT}use_${name} )
 
    # If we're not checking for system or local here, then let the
    # target config handle the rest.
@@ -635,7 +635,7 @@ function( addlib dir name symbol required check )
    if ( TARGET "${TARGET}" )
       return()
    endif()
- 
+
    message( STATUS "========== Configuring ${name} ==========" )
 
    # Check for the system package(s) if the user prefers it
@@ -676,7 +676,7 @@ function( addlib dir name symbol required check )
       # Set the folder (for the IDEs) for each one
       foreach( target ${targets} )
          # Skip interface libraries since they don't have any source to
-         # present in the IDEs   
+         # present in the IDEs
          get_target_property( type "${target}" TYPE )
          if( NOT "${type}" STREQUAL "INTERFACE_LIBRARY" )
             set_target_properties( ${target} PROPERTIES FOLDER "lib-src" )