Update the variables dictionaly Create a google worksheet table names of different fgeo tables

[maurolepore]

• Get the names of all tables
• Import the available variable's definitions
• Merge the available definitions with the names of each table
• Push all data into a Google worksheet data_dictionary
• Ask database team to fill the gaps
• Create an app to quickly inspect variable names? Or it could just be the google worksheet

[maurolepore]

See https://github.com/forestgeo/bciex/issues/3