UI: Fix and improve a few messages

- Samplerate -> Sample rate: should be two words.
- "Falloff type the feather": typo.
- JPEG, OpenJPEG and JPEG 2000 are the official spellings of the
  respective projects.
- "... boundary of image(including ...": missing space.
- "Points in . direction (cannot be changed ...)":
  Plural, it is a collection of multiple points. Also do not use
  contraction for "cannot".
- The Bevel modifier's "Only Vertices" option was replaced by a
  Vertices mode in 2.90.
- "Metaball Types": affects one object, should be singular.
- "Metaball data-block to defined blobby surfaces": typo.
- "Wire Size": this option has nothing to do with wireframes, I suppose
  it's an old terminology.
- "... (for negative speed.)": remove trailing period.
- "Smooth factor effect": the prop describes a factor for an effect,
  not an effect for a factor.
- "... assigned to their vertices(ensures ...": missing space.
- "... used when faces have the ObColor mode enabled": ObColor is not
  used anywhere else in the UI (since Blender 2.50).
- "Effect Children": typo -> Affect.
- "Distort Min/Max": copy-pasted from another pair of properties.
- "... dismiss menu on release.(in 1/100ths of sec)": replace period
  with space.
- "resolution": field names should be capitalized.

Pull Request: https://projects.blender.org/blender/blender/pulls/108227

scripts/startup/bl_ui/space_sequencer.py

@@ -1651,7 +1651,7 @@ class SEQUENCER_PT_source(SequencerButtonsPanel, Panel):
                 col = col.column(align=True)
                 split = col.split(factor=0.5, align=False)
                 split.alignment = 'RIGHT'
-                split.label(text="Samplerate")
+                split.label(text="Sample Rate")
                 split.alignment = 'LEFT'
                 if sound.samplerate <= 0:
                     split.label(text="Unknown")