OTAccount: rename bool member variables

Command used:
    sed -r -i 's/([^[:alpha:]^>^\.])m_b([[:alpha:]]+)/\1\l\2_/g' "$file"
OTAccount: rename long member variables

Command used:
    sed -r -i 's/([^[:alpha:]^>^\.])m_l([[:alpha:]]+)/\1\l\2_/g' "$file"
OTAccount: remove "the" preposition in variable names

Command used:
    sed -r -i 's/([^[:alpha:]^>^\.])the([A-Z][[:alpha:]]+)/\1\l\2/g' "$file"
OTAccount: rename pointer variables

Used command:
    sed -r -i 's/([^[:alpha:]^>^\.])p([A-Z][[:alpha:]]+)/\1\l\2/g' "$file"
OTAccount: rename member variables

Used command:
    sed -r -i 's/([^[:alpha:]^>^\.])m_([[:alpha:]]+)/\1\l\2_/g' "$file"
Cleanup and structure improvements of OTAccount.