* TIC import support!!!

* reject/retain paths for FTN networks
* Fix bug in FileEntry.findFiles() with meta pairs
* New well known file meta - mostly related to TIC
* Index of file_sha256
* FileEntry.persist() can update entries

core/database.js

@@ -263,7 +263,7 @@ const DB_INIT_TABLE = {
 		dbs.file.run('PRAGMA foreign_keys = ON;');
 
 		dbs.file.run(
-			//	:TODO: should any of this be unique??
+			//	:TODO: should any of this be unique -- file_sha256 unless dupes are allowed on the system
 			`CREATE TABLE IF NOT EXISTS file (
 				file_id				INTEGER PRIMARY KEY,
 				area_tag			VARCHAR NOT NULL,
@@ -281,6 +281,11 @@ const DB_INIT_TABLE = {
 			ON file (area_tag);`
 		);
 
+		dbs.file.run(
+			`CREATE INDEX IF NOT EXISTS file_by_sha256_index
+			ON file (file_sha256);`
+		);
+
 		dbs.file.run(
 			`CREATE VIRTUAL TABLE IF NOT EXISTS file_fts USING fts4 (
 				content="file",