Add APP_DB_ROOT config variable

cps/config.py

@@ -44,6 +44,7 @@ def check_setting_int(config, cfg_name, item_name, def_val):
 
 CheckSection('General')
 DB_ROOT = check_setting_str(CFG, 'General', 'DB_ROOT', os.path.join(os.getcwd(), "Calibre Library"))
+APP_DB_ROOT = check_setting_str(CFG, 'General', 'APP_DB_ROOT', os.getcwd())
 TEMPLATEDIR = check_setting_str(CFG, 'General', 'TEMPLATEDIR', os.path.join(os.getcwd(), "views"))
 MAIN_DIR = check_setting_str(CFG, 'General', 'MAIN_DIR', os.getcwd())
 PORT = check_setting_int(CFG, 'General', 'PORT', 8083)
@@ -59,6 +60,7 @@ SYS_ENCODING="UTF-8"
 
 configval={}
 configval["DB_ROOT"] = DB_ROOT
+configval["APP_DB_ROOT"] = APP_DB_ROOT
 configval["TEMPLATEDIR"] = TEMPLATEDIR
 configval["MAIN_DIR"] = MAIN_DIR
 configval["PORT"] = PORT
@@ -72,6 +74,7 @@ def save_config(configval):
     new_config.filename = CONFIG_FILE
     new_config['General'] = {}
     new_config['General']['DB_ROOT'] = configval["DB_ROOT"]
+    new_config['General']['APP_DB_ROOT'] = configval["APP_DB_ROOT"]
     new_config['General']['TEMPLATEDIR'] = configval["TEMPLATEDIR"]
     new_config['General']['MAIN_DIR'] = configval["MAIN_DIR"]
     new_config['General']['PORT'] = configval["PORT"]

cps/ub.py

@@ -8,7 +8,7 @@ import os
 from cps import config
 from werkzeug.security import generate_password_hash
 
-dbpath = os.path.join(config.MAIN_DIR, "app.db")
+dbpath = os.path.join(config.APP_DB_ROOT, "app.db")
 engine = create_engine('sqlite:///{0}'.format(dbpath), echo=False)
 Base = declarative_base()