Make inline reticle code more general and robust

Summary:
Ref T2009. Currently, the code which draws the reticle is sort of implicitly hard-coded with some of the rules for the 2up view.

Instead, use general rules:

  - Start selection at the next `<td />`.
  - End selection at the rightmost adjacent `<td />`.

These rules work in all cases.

Test Plan:
  - Activated reticle in 1up and 2up views by clicking line numbers and hovering over comments. It now draws correctly.
  - Dragged over line ranges in 1up and 2up views, saw accurate reticle.

Reviewers: btrahan, chad

Reviewed By: chad

Subscribers: epriestley

Maniphest Tasks: T2009

Differential Revision: https://secure.phabricator.com/D12009

resources/celerity/map.php

@@ -10,8 +10,8 @@ return array(
     'core.pkg.css' => '6408f2d3',
     'core.pkg.js' => '5a1c336d',
     'darkconsole.pkg.js' => '8ab24e01',
-    'differential.pkg.css' => '6641cdd5',
-    'differential.pkg.js' => '3fab5259',
+    'differential.pkg.css' => 'df94a9e2',
+    'differential.pkg.js' => 'f458a7dc',
     'diffusion.pkg.css' => '591664fa',
     'diffusion.pkg.js' => 'bfc0737b',
     'maniphest.pkg.css' => '68d4dd3d',
@@ -55,7 +55,7 @@ return array(
     'rsrc/css/application/dashboard/dashboard.css' => '17937d22',
     'rsrc/css/application/diff/inline-comment-summary.css' => 'eb5f8e8c',
     'rsrc/css/application/differential/add-comment.css' => 'c478bcaa',
-    'rsrc/css/application/differential/changeset-view.css' => 'bad09138',
+    'rsrc/css/application/differential/changeset-view.css' => '88100552',
     'rsrc/css/application/differential/core.css' => '7ac3cabc',
     'rsrc/css/application/differential/results-table.css' => '181aa9d9',
     'rsrc/css/application/differential/revision-comment.css' => '48186045',
@@ -367,7 +367,7 @@ return array(
     'rsrc/js/application/differential/behavior-comment-preview.js' => '6932def3',
     'rsrc/js/application/differential/behavior-diff-radios.js' => 'e1ff79b1',
     'rsrc/js/application/differential/behavior-dropdown-menus.js' => '2035b9cb',
-    'rsrc/js/application/differential/behavior-edit-inline-comments.js' => 'ae8e9b44',
+    'rsrc/js/application/differential/behavior-edit-inline-comments.js' => '33d4c5e2',
     'rsrc/js/application/differential/behavior-keyboard-nav.js' => '2c426492',
     'rsrc/js/application/differential/behavior-populate.js' => '8694b1df',
     'rsrc/js/application/differential/behavior-show-field-details.js' => 'bba9eedf',
@@ -518,7 +518,7 @@ return array(
     'conpherence-notification-css' => '04a6e10a',
     'conpherence-update-css' => '1099a660',
     'conpherence-widget-pane-css' => '3d575438',
-    'differential-changeset-view-css' => 'bad09138',
+    'differential-changeset-view-css' => '88100552',
     'differential-core-view-css' => '7ac3cabc',
     'differential-inline-comment-editor' => '41060c54',
     'differential-results-table-css' => '181aa9d9',
@@ -569,7 +569,7 @@ return array(
     'javelin-behavior-differential-comment-jump' => '4fdb476d',
     'javelin-behavior-differential-diff-radios' => 'e1ff79b1',
     'javelin-behavior-differential-dropdown-menus' => '2035b9cb',
-    'javelin-behavior-differential-edit-inline-comments' => 'ae8e9b44',
+    'javelin-behavior-differential-edit-inline-comments' => '33d4c5e2',
     'javelin-behavior-differential-feedback-preview' => '6932def3',
     'javelin-behavior-differential-keyboard-navigation' => '2c426492',
     'javelin-behavior-differential-populate' => '8694b1df',
@@ -1027,6 +1027,14 @@ return array(
     '331b1611' => array(
       'javelin-install',
     ),
+    '33d4c5e2' => array(
+      'javelin-behavior',
+      'javelin-stratcom',
+      'javelin-dom',
+      'javelin-util',
+      'javelin-vector',
+      'differential-inline-comment-editor',
+    ),
     '3ab51e2c' => array(
       'javelin-behavior',
       'javelin-behavior-device',
@@ -1645,14 +1653,6 @@ return array(
       'javelin-util',
       'phabricator-prefab',
     ),
-    'ae8e9b44' => array(
-      'javelin-behavior',
-      'javelin-stratcom',
-      'javelin-dom',
-      'javelin-util',
-      'javelin-vector',
-      'differential-inline-comment-editor',
-    ),
     'b1f0ccee' => array(
       'javelin-install',
       'javelin-dom',