Initial commit: nimforum with BaraDB backend

- Replaced SQLite with BaraDB via TCP wire protocol
- Added baradb_client.nim and baradb_sqlite.nim adapter
- Renamed SQL keywords: status->usrStatus, key->sessionKey, like->postLike
- Added NOW() support for datetime defaults
- Switched Jester to asynchttpserver (-d:useStdLib) to avoid thread/GC issues
- Frontend built and favicon added

tests/browsertests/scenario1.nim

@@ -0,0 +1,43 @@
+import unittest, common
+
+import webdriver
+
+proc test*(session: Session, baseUrl: string) =
+  session.navigate(baseUrl)
+
+  # Sanity checks
+  test "shows sign up":
+    session.checkText("#signup-btn", "Sign up")
+
+  test "shows log in":
+    session.checkText("#login-btn", "Log in")
+
+  test "is empty":
+    session.checkIsNone("tr > td.thread-title")
+
+  # Logging in
+  test "can login/logout":
+    with session:
+      login("admin", "admin")
+
+      # Check whether we can log out.
+      logout()
+      # Verify we have logged out by looking for the log in button.
+      ensureExists "#login-btn"
+
+  test "can register":
+    with session:
+      register("test", "test")
+      logout()
+
+  test "can't register same username with different case":
+    with session:
+      register "test1", "test1", verify = false
+      logout()
+
+      navigate baseUrl
+
+      register "TEst1", "test1", verify = false
+
+      ensureExists "#signup-form .has-error"
+      navigate baseUrl