This is necessary as any strings have changed since last time.
Also the python script used to extract bitcoinstrings.cpp, extract_strings_qt.py
now sorts the strings before generating the output file. This results in more
deterministic output and thus smaller diffs.
- Move scripts/qt to share/qt, to clean up toplevel directories
- Update english ts file which is used to source messages for Transifex
- In extract_strings_qt.py use a glob *.h *.cpp, this is safe now that the Wx UI files are removed