Change submodules to HTTPS urls.

Update the HEAD positions.

.gitmodules

@@ -1,16 +1,16 @@
 [submodule "client"]
 	path = client
-	url = git@github.com:DMDirc/DMDirc.git
+	url = https://github.com/DMDirc/DMDirc.git
 	branch = master
 [submodule "plugins"]
 	path = plugins
-	url = git@github.com:DMDirc/Plugins.git
+	url = https://github.com/DMDirc/Plugins.git
 	branch = master
 [submodule "util"]
 	path = util
-	url = git@github.com:DMDirc/Util.git
+	url = https://github.com/DMDirc/Util.git
 	branch = master
 [submodule "parser"]
 	path = parser
-	url = git@github.com:DMDirc/Parser.git
+	url = https://github.com/DMDirc/Parser.git
 	branch = master

client

@@ -1 +1 @@
-Subproject commit 1934e86d9fdc26ab624b1307e56aeb7aa3a61bd1
+Subproject commit f7f3da0322c27b554739859f4c180c81a5b274e3

parser

@@ -1 +1 @@
-Subproject commit 830e54a9f7567430af989cde432e69d3ea7550c4
+Subproject commit 8ca64a80fa5cb40ab39aa9309974a8801feeaf88

plugins

@@ -1 +1 @@
-Subproject commit ee75f5ab8fe77ec8c403fbcdfd62673007af8b6b
+Subproject commit be7ceba2dc22e3923a5a89a2700ee0bb3f43825c

util

@@ -1 +1 @@
-Subproject commit 397bc5d06b72550c1795b7888bc70d150ea995b5
+Subproject commit 2b76d27c6f5267943ce6130fd36e0685f90bb255