Add submission file root path option to the specs and config

.gitignore

@@ -7,3 +7,4 @@ cavecomm
 example.crt
 example.key
 .idea/
+log.txt

spec/spec.md

@@ -243,6 +243,7 @@ mandatory:
 	emailServerAddress
 	databaseConnectionString={postgresql://{user}:{password}@{host}:{port}/{database}}
 	domain
+	submissionFileRootPath 						Path to a folder in which the freelancer submissions are stored
 
 Optional if CROW_ENABLE_SSL not defined
  	sslCrtPath=

src/default-cavecomm.conf

@@ -8,6 +8,7 @@
 # emailPassword=
 # emailServerAddress=
 # domain=
+# submissionFileRootPath=
 
 # Optional if CROW_ENABLE_SSL not defined
 # sslCrtPath=
@@ -51,6 +52,7 @@ itemsPerPage=5;
 bruteForceMitigationLockSeconds=900;
 bruteForceMitigationAttempts=5;
 
+submissionFileRootPath=./submissions;
 submissionMaxFileSizeMB=8;
 submissionMaxtotalStorageMB=16;
 submissionMaxStorageDurationH=24;